EM4TII+ Manual

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Table of contents
1.

Safety instructions and hazard warnings ............................................................................................. 3

2.

Product description ................................................................................................................................ 4

3.

Installation and connection ................................................................................................................... 7
3.1
3.2

4.

Wall mounting ............................................................................................................... 7
Electrical connection ..................................................................................................... 9

Displays and parameterization, data interfaces ................................................................................ 12
4.1
4.2
4.2.1
4.2.2
4.2.3
4.2.4
4.2.5
4.2.6
4.2.7
4.2.8
4.2.9
4.3

Display screen and operating display ......................................................................... 12
Parameters and reading out meter data...................................................................... 15
Protocol diagram ........................................................................................................ 15
Command and data formats ....................................................................................... 16
Communication cycle.................................................................................................. 19
Access authorizations ................................................................................................. 20
OBIS codes ................................................................................................................ 20
Structure of load profile compilation ............................................................................ 23
Recognition of the traction power system ................................................................... 26
Error register (F.F) ...................................................................................................... 27
Examples of read-outs from the EM4TII+ ................................................................... 28
Data input for GPS receiver connection ...................................................................... 32

5.

Maintenance.......................................................................................................................................... 33

6.

Measurement ........................................................................................................................................ 34
6.1
6.2

7.

Measuring principle .................................................................................................... 34
Formula: generation of measured values .................................................................... 34

Technical data....................................................................................................................................... 35
7.1
7.2

General specifications ................................................................................................ 35
Applied standards and regulations .............................................................................. 36

Versions
VersionDate

Evolution

Preliminary

2020-10-30

Creation- Preliminary version

V1.0

2020-11-05

First official version

V2.0

2022-01-10

System change not reported in logbook
Front plate change + Data format displayed on LCD
Re-verification period to 10 years

V3.0

2023-08-16

New picture on first page
Add AC+AC and DC+DC channels feature with new
firmware version V1.23

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1.

Safety instructions and hazard warnings

Please read this chapter through carefully. It familiarises you with the important safety
instructions and hazard warnings for handling the EM4TII+ device.
CAUTION
Do not under any circumstances open the device! Opening the device can cause electric
shocks.
This device does not contain any parts which can be maintained by the user. Have all
maintenance work carried out by servicing specialists only.

NOTE
The device is designed for a maximum secondary voltage converter voltage of 300 V.

Explanation of markings:

Protective earth

CE certification

Warning of a hazard(adhere to the documentation!)

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2.

Product description

This manual describes all design variants of the EM4TII+. Be aware that meters may be designed
differently with regards to configuration, interface, inputs/outputs etc. It is possible that some metercharacteristics are described here which do not apply to your meter.
The EM4TII+ is a single-phase energy meter as per EN 50463-x:2017 and thus meets therequirements of the EU directive 1302/2014/EU in accordance to Commission Implementing
Regulation (EU) 2018/868, 2019/776 and 2020/387.
The energy meter EM4TII+ contains the energy measurement function (EMF) as well as the vehicleside Data Handling System (DHS) up to the output-side interface for the communication function(transfer of the CEBD to the communication function). The communication device must process andtransfer the data to the ground site in XML format in accordance with EN 50463-4: 2017.
The EM4TII+ processes signals from transformer-based and electronic transducer systems for
current and voltage and generates a load profile from the energy values they calculate.
The load profiles are recorded in datasets with a default period length of 5 minutes (other period
lengths available on request from1 to 60 minutes). These datasets contain the date, time, traction
type and events together with the primary energy (delta) values and can optionally contain thelocation coordinates too. The measured energy data consists of consumed and regenerated active
and reactive (for AC) energy in separate registers and is stored in the load profile for at least 300
days (for 5-minute period length).
The energy values are generated separately from the signals from 2 AC and 2 DC input channels (Uand I in each case). In the process the highly precise measurement of energy values is achieved
using the digitally sampled converter signals and thus makes for the highest degree of temperatureand long-term stability. The EM4TII+ is also optionally available for DC measurement in a design with
1 voltage input and up to 3 current inputs which records the energy consumption on vehicles withmore than one current consumption points.
The EM4TII+ is suitable for use in multi-system vehicles. It can be used on 25 kV 50 Hz and 15 kV
16.7 Hz as well as 750 V DC, 1.5 kV DC and 3 kV DC. A system change is detected by the energy
meter and recorded in the load profile.
The EM4TII+ has a separate input for capturing serial data telegrams from a GPS receiver (NMEA
0183 format) from which the location coordinates can be generated and matched to the appropriate
energy data. When receiving GPS data, the internal RTC device clock synchronises, if necessary,
using the time information contained in the data telegrams.
As well as the load profiles special events can be saved in a logbook, as per EN 50463-3:2017. This
includes, for instance, the activation and deactivation of the supply voltage, synchronisation of thetime and changing the parameters important for energy calculation.
In addition, the identification data on the EM4TII+ for the vehicle (CPID - Consumption Point ID) or
the train number, for instance, can be stored and read out separately. The illuminated display on
EM4TII+ shows a rolling list of all the relevant energy and status information without it being
necessary to activate a mechanical or optical key.
The data is transferred via serial interfaces. All the measured and stored data can be read out via the
RS interface (via modem or locally). The interface variants RS232, RS422 or RS485 are available.
The applied data communication protocol is IEC 62056-21 and thus easily adapted by all common
remote read out systems.

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The supply voltage for the EM4TII+ can be selected between 24 V and 110 V as per EN 50155.
Two hardware variants are available, one for 24V or 48V, the other one for 72V, 96V or 110V
Optionally a communication unit (modem) can be supplied with 12V DC voltage from the EM4TII+.
The conditions of use (with regards to EMC, temperature, vibrations etc.) meet the special
requirements for locomotives, including the EN 50155, EN 50121-3-2, EN 50124-1 and EN 61373.
Concerning shock and vibrations, the meter has been tested in respect to category 1, class B severity
defined in EN 61373.
The compact and fireproof housing provides protection from the penetration of moisture and foreign
bodies to level IP 65.

Figure 2.1: Block diagram

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View of the rating plate:
7

1

2
3

8
9

4
10

5

6

1
2
3
4
5
6
7
8
9
10

Serial number
Test LED for active and reactive power
LC display
Space for ownership marking
Specifications on operation of the meter
Connection plan and terminal assignment
Year + date-code (day of the year) of manufacture
Type designation and type code
Protection type
Adhere to the operating manual

Scope of delivery:• 1x EM4TII+ base device• Operating manual• Additional locking bolts for cable gland (2 x Ø 6.4 x 25 mm and 2 x Ø 9.3 x 20 mm)

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3.

Installation and connection

3.1

Wall mounting

The EM4TII+ device is designed for three-point mounting as per DIN 43857-2. For a detailed view ofthe fastening holes see figure 3.1. The four sealing screws for the terminal cover are tightened evenly
and alternately to 0.5 Nm with a PZ2.
ATTENTION!
Damage of the unit due to excessive torque!
• Tighten the sealing screws with a maximum torque of 0.5 Nm.
The meter is received partly sealed by the manufacturer (to avoid internal access to electronics) toallow connections through the cable glands.
Once the connections are correctly done and the cover applied, the two lower screws of thistransparent cover can be sealed, so that it is not possible any more to easily open the meter.

Figure 3.1: Scale drawing
An existing EM4T installation can be adjusted to an EM4TII+ model using an installation kit which isavailable as an accessory. For compliance with Standard EN 50463:2017 an exchange of themeasurement-System (meter + communication) is necessary.

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DANGER!
Contact of parts under voltage is extremely dangerous!
When installing or changing the meter, the conductors to which the meter is connected must be free ofvoltage.
• Remove the relevant back-up fuses and store them in such a way that other people cannot re-insert
the back-up fuses without notice.
• If you use selective circuit breakers for disconnection from the mains, secure them against
unintentional reconnection.
• When installing and connecting the meter, only use the screw terminals provided for this purpose.
ATTENTION!
Damage to the connection terminals due to excessive torque!
The appropriate torque depends on the type of the wire and the maximum current.
• Tighten the connection terminals with the appropriate torque according to IEC 60999-1.

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3.2

Electrical connection

DANGER!
Contact of parts under voltage is extremely dangerous!
• Secure meters with a transformer connection in the voltage path with a back-up fuse of <6 A.
The supply lines to the device - which can total up to nine depending on the energy meter design must be laid with cable glands and connected as per figure 3.2.

Figure 3.2: Terminal block
Note: When using the EM4TII+ with the communication device PEMG, connections for power supply,
communication and GPS are combined in one cable.

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Version
AC
ACDC
DC
DCDC
DCDCDC
AC+AC
DC+DC

Channel 1
AC-voltage
AC-voltage
DC-voltage
DC-voltage
DC-voltage
AC-voltage
DC-voltage

Channel 2
AC-current
AC-current
DC-current
DC-current
DC-current
AC-current
DC-current

Channel 3

Channel 4

DC-voltage

DC-current

DC-current
DC-current
AC-voltage*
DC-voltage

DC-current
AC-current
DC-current

Table 3.1: EM4TII+ inputs configurations
From firmware version V1.23, AC+AC and DC+DC measurement functions have been introduced.
* Note: for the AC+AC variant a voltage/current transducer is mandatory on Channel 3.
DC-voltage is always measured via a voltage/current transducer.
The new AC+AC measurement function enables the connection of two independent voltage andcurrent sources in the AC range. This means that 15/25kV and other significantly lower voltages that
do not conform to Traction Type can now be measured in one measuring device.
The new DC+DC measurement function enables the connection of two independent voltage andcurrent sources in the DC range. Thus, different DC voltage ranges can now be measured in one
measuring device.
The connection wires to be used:
Screw terminals:• Interfaces:• Measuring and supply terminals:

0.14 mm² to 1.5 mm² (use wire end ferrule)
0.2 mm² to 4 mm² (use wire end ferrules)

Parallel to the screw terminal for the RS interface there is a plug connector (grid dimension 2.54 mm)
to which a computer/laptop can be connected locally. The plug connector and the screw terminals areconnected to each other electrically. Thus, both interfaces are of the same RS type. When readingout locally you must make sure that there is currently no communication in process via the RS screw
terminals. An active communication process is indicated in the display by an arrow over "RS". If an
attempt to communicate is made whilst another communication process is in process, the current
communication process breaks down.
Cable glands (properties):• Measuring signal•

Supply and communication

3 x M16 x 1.5 (Ø 6.5 – 9.5 mm)
1 x M20 x 1.5 (Ø 9.5 – 13.5 mm)
4 x M16 x 1.5 (Ø 4.0 – 6.5 mm)

The use of shielded cables is recommended, with the shields connected to the metallic part of thecable glands thanks to specific internal washer.
Ground connections are described in figure 3.2 (on metallic square through holes of 7mm diameter)and should be done with a cable as short as possible to local earth.

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13 – GPS (in) - RS232-TxD
14 – GPS (in) - RS232-RxD
15 – GPS (in) - RS232-GND

16 – RS232-n.c.
17 – RS232-n.c.
18 – RS232-TxD
19 – RS232-RxD
20 – RS232-GND

1 – U_Modem + (out)2 – U_Modem - (out)3 – U_Batt + (in)4 – U_Batt - (in)5 – CH1 high
6 – CH1 low
7 – CH2 high
8 – CH2 low

RS485-n.c.
RS485-n.c.
RS485-B +RS485-A RS485-GND

RS422-A
RS422-B
RS422-B’
RS422-A’
RS422-GND

9 – CH3 high10 – CH3 low
11 – CH4 high
12 – CH4 low

Figure 3.3: Connection assignment(n.c: not connected)

Since the nomenclature of the terminals of the RS422 interface for the LEM Products EM4T and
EM4TII+ are different, in case of replacement of the EM4T with EM4TII+ in an installation, please use
the table below to connect the RS422 interface.
Marking of theconnector
EM4T
EM4TII+
Tx+
A
Rx+
A‘
TxB
RxB‘

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Data flow direction(relative to EM4T/EM4TII+)
Send
Receive
Send
Receive

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4.

Displays and parameterization, data interfaces

4.1

Display screen and operating display

Figure 4.1: LC display
Display of detected mains system on the display screen (possible values):12
 16.7 Hz measurement of current on channel 2 (only possible with AC, ACDC or AC+AC
version)52
62
D2

 50 Hz measurement of current on channel 2 (only possible with AC, ACDC or AC+AC version) 60 Hz measurement of current on channel 2 (only possible with AC, ACDC or AC+AC version)
D4  DC measurement of current on channel 4 (only possible with ACDC or DC+DC version) DC measurement of current on channel 2(only possible with DC, DCDC, DCDCDC or DC+DC version)

D 3
D DC measurement of current on channel 3 (only possible with DCDC or DCDCDC version)

4  DC measurement of current on channel 4 (only possible with DCDCDC version)

14  16.7 Hz measurement of current on channel 4 (only possible with AC+AC version)
54  50 Hz measurement of current on channel 4 (only possible with AC+AC version)
64  60 Hz measurement of current on channel 4 (only possible with AC+AC version)

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Cursor field:
Cursor arrow
Q LED
GPS
RS
CLK
F.F

Function
OFF: Reference variable for the LED is active energy
ON: Reference variable for the LED is reactive energy
OFF: no GPS telegram received
FLASHING: GPS telegram received
ON: Valid GPS telegram received -> clock engaged
OFF: No communication on the RS232 interface
ON: Communication on the RS232 interface
OFF: Power reserve for the device clock not depleted
ON: Power reserve for the device clock depleted
OFF: There is no fatal device fault
ON: There is a fatal device fault
Table 4.1: Cursor arrows definition

The individual pieces of energy and operation information are displayed cyclically (approximately 10
seconds) as shown in table 4.2:

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Display

Meaning
Display test

1. 8 . 0

kWh0 0 0 0 0 0 0 0 0.0

2. 8. 0kWh
0 0 0 0 0 0 0 0 0. 0

3. 8. 0

Energy register for
positive active energy
Energy register for
negative active energy
Energy register for
positive reactive energy

kvarh
0 0 0 0 0 0 0 0 0. 0

4. 8. 0Duration of thedisplay
Appears aftercommissioning for
approximately 1 s

Energy register for
negative reactive energy

kvarh
0 0 0 0 0 0 0 0 0. 0

Fault display

F.F
00000000

Identity number

0. 0. 100000000

Firmware identification

0. 2. 012200000
0. 9.1hh .. mm.. ss
22 .. 57 .. 42Time

0. 9 . 2

YY - MM- DD

Date

Appears
for 10 s for each

12 - 06 - 20

Manufacture number

C. 1. 000000000

Locomotive number

C . 72 . 100000000

Train number

C . 72 . 200000000

C. 1. 9Rolling list

consumptionPoint

Consumption point ID(if string is longer than 16
characters, it is displayedin 2 parts for 5 sec each)
Display test

Appears for 1 s

Table 4.2: Rolling list

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4.2

Parameters and reading out meter data

Communication with the EM4TII+ follows the standard IEC 62056-21 (formerly IEC 61107).
Knowledge of this standard is assumed for the development of any kind of terminal software
dedicated to read the meter data.
All data objects are identified here by the OBIS Code System (formerly EDIS code system).
OBIS codes are given here in part as a full 6-digit code. On the possibly shortened reference OBIS
codes are referred to in this document, if any.

4.2.1 Protocol diagram
Here is a representation of a possible communication between the train computer or communication
unit and the EM4TII+ to select the load profile:

Communication Master

EM4TII+

Request message/ ? ! <CR> <LF>

Identification message/EMH5\@D4EM4TWII001--<CR> <LF>

Acknowledgement/option select message<ACK> 051 <CR> <LF>
Acknowledgement of baud rate selection

Command message: password message<SOH>P0<STX>()<ETX><SOH> P1 STX (00000000) <ETX>
Acknowledgement message
Command message: e.g.: Request forload profile data from 31/1/2013, 08:00
to 1/2/2013, 08:00<SOH> R5 <STX> P.01
(01301310800;01302010800)<ETX> <BCC><ACK>

Data message<STX> LP data block <ETX> <BCC>

Command message: end of communication<SOH> BO <ETX> <BCC>

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4.2.2 Command and data formats
In chapter 4.2.1 an example of a data exchange was given. In the present chapter, all notions related to messages
needed for communication will be explained.
In chapter 4.2.9, a sample communication cycle with explanations is given to show the use of the messages.
The EM4TII+ interface parameters are:Baud rate:
Data bits:
Stop bit:
Parity:9600 bps
7
1
even

Message explanation generally:/?

→ Command character

15

Please find the related explanation
after the message descriptions.

Request message

Command sequence/?

Device address

!

CR LF

1

9

20

2

3

Identification message/

X

Answer f. EM4TII+

X

1

X

11

Z

Ident

CR LF

12

13

3

Acknowledgement/option select message Command sequence
ACK

0

Z

Y

CR LF

4

*)

12

10

3

*) always “0”Data message (except in programming mode)
STX Data
5

14

!

CR

2

Answer f. EM4TII+

LF
3Data message (in programming mode)

ETX

BCC

6

8

Answer f. EM4TII+

STX

Data

ETX

BCC

5

18

6

8

Data message (in programming mode with

Answer f. EM4TII+

optional partial blocks)

STX

Data

EOT

BCC

5

18

7

8

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Programming command message

Command sequence

SOH C

D

STX

Data set

ETX

BCC

15

17

5

18

6

8

16

Error message
STX

Answer f. EM4TII+

E R R (

Error

5

) ETX

BCC

6

8

Explanations of the parameters in the tables above:1

Start character „/“2

End character „!“3

Final characters
CR: Carriage return
LF: Line feed4

Acknowledge character (ACK)5Start character for the generation of the block test character (BCC, STX = start of text).

6

This character is not necessary if no data set follows.

6

End character of a block (ETX)

7

End character in a partial block (EOT)8

Block check character (BCC).
The block begins after the first recognized SOH or STX signal and extends through the ETX character
that ends the message. The calculated block check character follows immediately after the ETX
character.

9

Request to send command „?“10„0“ – Read data
„1“ – Programming mode

11

Manufacturer identification „EMH“.

12

Baud rate identification (to change the baud rate)
The request message, the identification message and the acknowledge / option select message are sentwith the opening baud rate (9600 bits by default). The baud rate of the further communication depends
on the baud rate set in the protocol.
Communication baud rate:„0“ 300 Bd„1“ 600 Bd„2“ 1200 Bd„3“ 2400 Bd„4“ 4800 Bd„5” 9600 Bd

13

Manufacturer specific identification. Characters with the exception of “/” and “!”. Both last characters „/@“
point on the valid commands R5, R6 and W5.

14

Data block with the measured values. The measured values can be identified based on the table of EDIS
codes.

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15

Header character (SOH)

16

Programming command message identification„P“ Password command„W“ - Write command„R“ Read command„B“ Cancel the execution of a command (break)17

Command type identification (indicates the variant of the command)
Values:a)for the password command „P“„1“ – value is password 1 (W5 password according to IEC 62056-21)b)
for the write command „W“„1“ – writes ASCII-coded values„5“ – writes Format-coded (OBIS code)c)for the read command „R“„5“ – reads format coded (OBIS code)„6“ – reads format coded (OBIS code) with partial blocks

18

Data set
Gives OBIS code and data of the message.

19

Error message
It consists of max. 32 characters except for "(", ")", "*", "/" and "!".

20

Serial number
Optional field, given as Manufacturer specific, maximum 8 characters, not used in standard version.

Note: The serial number use/detection will require a special EM4TII+ configuration during manufacturing process.
The EM4TII+ standard version ignores this parameter, meaning that whatever the address given in the message,
the energy meter will respond.

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4.2.3 Communication cycle
To explain the use of the message notions explained in the previous chapter, a communication cycle is given as
an example:
Request message:/?<xxxxxxxxxx>!<CR><LF>

with <xxxxxxxxxxx> = device address (optionally).
If no address is specified, any connected meter will answer
Acknowledgement/option select message:<ACK>0ZY<CR><LF>

with

Z = Communication baud rate
(0=300Bd, 1=600Bd, 2=1200Bd, 3=2400Bd, 4=4800Bd, 5=9600Bd),
Y = 0: switch to read mode
Y = 1: switch to programming mode

Password message (command message):<SOH>P<n><STX>(<pppppppp>)<ETX><BCC>

with

<n>
= 1: Password 1<pppppppp> = Password

Programming mode:
Read<SOH>R5<STX><obis>([p1][;p2])[(e1)] [(e2)] [(e3)] [(e4)]<ETX><BCC> [(e5)]<ETX><BCC>

with-> select all)<obis><p1><p2><e1..4>====OBIS code number of the parameters/profiles to read.
time stamp beginning
time stamp end
OBIS codes of the energy registers to be included in the load profiles (no information<e5>= password, if necessary

Partial block reading<SOH>R6<STX><edis>([p1;p2][;p3])[(e1)] [(e2)] [(e3)][(e4)]<ETX><BCC>

with<edis>
<p1>
<p2>
<p3>
<e1..4>=====OBIS code of the profile to readtime stamp beginning
time stamp end
number of records per block
OBIS code of the energy registers to be read (no information -> select all)Write
<SOH>W5<STX><obis>([p1])[(e1)]<ETX><BCC>

with<edis><p1><e1>

16August2023/V3.0= OBIS code of the parameter to be written= parameter value= password, if necessary

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4.2.4 Access authorizations
The EM4TII+ user has two access levels via the data interface:• The first level is the password level with read authorisation• The second level is the service level with read and write authorisation
The password level enables the user to read data and parameters from the EM4TII+ using the login
password. This password level does not allow you to write parameters.
The authorized service user can also use a second password to access the service level (W5password according to IEC 62056-21). This enables him to write certain parameters (refer toTable 4.4 - Obis codes).

Access authorisations

Read(Data and parameters)

Password level

Write(Parameters)
Not allowed

All (except PWD*)
Service level

Adjustable parameters(*PWDDefinition of passwords)
Table 4.3: Access authorisations

4.2.5 OBIS codes
All data and parameters can be read out with any of both passwords, except the passwords
themselves.
For all write commands to the EM4TII+ the OBIS code must be given as 6-digit OBIS code (see tablebelow).
For all write commands the usage of a separate password (W5 password according to IEC 62056-21)
in addition to the obligatory login password is mandatory.

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OBIS code

Description

Write

Read Format

Remark

0-0:C.1.0*255
0-0:C.72.1*255
0-0:C.72.2*255
1-0:C.1.9*255
1-0:0.0.0*255
1-0:0.0.1*255

Manufacturing number
Locomotive number
Train number
Consumption Point-ID
Identification register 0
Identification register 1No
W5-password
W5-password
W5-password
W5-password
W5-password

Yes
Yes
Yes
Yes
Yes
Yes

up to 8 digits
8-digits ASCII string
8-digits ASCII string
32-digits ASCII string Note 3)
8-digits ASCII string
8-digits ASCII string

0:1.8.0
0:2.8.0
0:3.8.0
0:4.8.0
12:#.8.0

Active energy positive
Active energy negative
Reactive energy positive
Reactive energy negative# energy of ch. 12

No
No
No
No
No

Yes
Yes
Yes
Yes
Yes

34:#.8.0# energy of ch. 34

No

Yes

Floating point (kWh)Floating point (kWh)Float. point (kvarh)
Float. point (kvarh)
Floating point(kWh/kvarh)
Floating point(kWh/kvarh)

accumulated value
accumulated value
accumulated value
accumulated value
1: active positive
2: active negative
3: reactive positive
4: reactive negative

1-0:1.7.0*255
1-##:1.7.0*255

Total active power P
actual active power P

No
No

Yes
Yes

Floating point (kW)
Floating point (kW)1-0:3.7.0*255
1-##:3.7.0*255

Total reactive power Q (AC) No
actual reactive power Q (AC) No

Yes
Yes

Floating point (kvar)
Floating point (kvar)

1-#:32.7.0*255
1-#:31.7.0*255
1-1:14.7.0*255

actual voltage of ch. #actual current of ch. #actual frequency on ch 1

No
No
No

Yes
Yes
Yes

Floating point (V)Floating point (A)Floating point (Hz)all channels, Note 5)
12: CH 1=U, CH 2=I
34: CH 3=U, CH 4=I
13: CH 1=U, CH 3=I
14: CH 1=U, CH 4=I
all channels, Note 5)
12: CH 1=U, CH 2=I
34: CH 3=U, CH 4=I
CH 1 or 3
CH 2, 3 or 4

0-223:113.108.101*00.3.00-223:110.112.118*#

LED (P/Q) control
LED pulses per kWh
Primary rated value

W5-password
No
No

Yes
Yes
Yes

1 bit
Floating point
Floating point
expressed as V or A

0-223:110.115.118*#

Secondary rated value

No

Yes

Floating point
expressed as V or A

0.9.1
0.9.2
C.8.0
1-0:0.9.129*255
0.8.4

No
No
No
W5-password
No

Yes
Yes
Yes
Yes
Yes

0-223:103.112.115*0

Time
Date
Operating seconds
setting date and time
Registration period time ofload profile
GPS RMC last message

No

Yes

0-223:98.100.97*00-223:112.119.100*03
0-223:112.119.100*35

Baud rate
Login password
W5-password

W5-password
W5-password
W5-password

Yes
No
No

2 digits
8-digits ASCII string
8-digits ASCII string

0.2.00-223:98.100.97*255
C.90.#

Firmware version
No
Firmware date
No
Checksums (# = 0:Noparameterization variables; #= 1: configuration variables;# = 2: firmware binary code)

Yes
Yes
Yes

8 hex digits

F.F
P.01
P.98

Error code
Load profile
Logbook

Yes
yes
yes

No
No
No

0 = P, 1 = Q#: channel, Note 4)
0  CH 1, …
3  CH 4#: channel, Note 4)
0  CH 1, …
3  CH 4

Note 2)in minutes

8 hex digits

Note 1)

Refer §4.2.8

Table 4.4: OBIS codes

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Note 1): Setting of the baud rate of the data interface
The setting of the baud rate of the data interface with the above OBIS code must be performed with
one of the following parameters:
00
01
02
03
04
05

= 300 Baud= 600 Baud= 1200 Baud= 2400 Baud= 4800 Baud= 9600 Baud

Note 2): Set the device clock
The setting of the device clock with the above OBIS code must be performed with the following
parameter:
YYMMDDHHMMSS wwnz
YY
= year (00 .. 99)
MM= month (01 ..12)DD= day (01 .. 31)hh= hour (00 .. 23)mm= minute (00 .. 59)
ss= second (00 59)
ww= 00 (value is ignored when writing): week in the yearn
= 0 (value is ignored when writing): day in the weekz
= season flag (0 = winter time, 1 = summer time, 2 = UTC time)
The EM4TII+ will code all timestamps (in the load profile and the log etc.) with UTC time.
Setting of the clock causes the capture period to end prematurely. The capture period which follows isended synchronously and is shortened as necessary if the adjustment is not made synchronouslywith the capture period split.
If the time deviation between the old and the new device time is less than ±2 s, the clock is only
synchronised. The capture period is not completed in this case.
Please note that for the standard version of the EM4TII+ the device clock is synchronised
automatically based on the time information included in the GPS data telegrams.
Note 3): Consumption Point-ID
This dedicated register for the consumption point ID is an ASCII text string with 32 charactersmaximum, as the definition of CPID has evolved: please refer to EN 50463-1:2017, § 4.2.5.2
Note 4): Reading of transformer ratios
The configured transformer ratios of the EM4TII+ for the four input channels yield from the primaryand secondary rated values identified by OBIS codes 0-223:110.112.118*# and 0-223:110.115.118*#(#=0  channel 1, … ‚ #=3  channel 4).
Note 5): Power values in the case of regenerated energy
In the case of negative power values (i.e. feeding regenerated energy to the supply system), thepower values given by the EM4TII+ are marked with a negative sign.
Nevertheless, the OBIS code system originally distinguishes between separate registers for positive
and negative power values, the usage of only one value allows it easily to monitor the power directly
even in the case of alternating signs of the power value.

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4.2.6 Structure of load profile compilation
A status word is stored with each load profile record. Each bit in this status word contains information
about a certain error or event.
Each time an event occurs that changes the status word, a new header with the updated status wordis generated and stored.
Depending on the EM4TII+ setting, this may trigger an additional record with the correspondingtimestamp (by default) or it may be reported at the next end of the recording interval period.
The structure of header and the decoding of the status word is explained below:
Example: Structure of the load profile header as an example load profile data set:P.01(121015061841)(########)(5)(9)(C.1.9)()(C.5.1)()(C.5.3)()(0.9.17)()(0.9.18)()(1.29.0)(kWh)(2.29.0)(kWh)(3.29.0)(kvarh)(4.29.0)(kvarh)
P.01
(121015061841)
(########)
(5)
(9)

OBIS-Code for load profile,timestamp of load profile entry (format YYMMDDhhmmss)
status word in hexadecimal coding (see below)
recording interval in undisturbed casenumber of variables stored in the load profile

Then the OBIS codes of the stored values follow (possibly with their physical units) and finally carriage
return (0D) and line feed (0A).
The meaning of the bits of the status word is listed below.
If necessary, the status is composed by a plurality of individual bits, if multiple events are recorded.
This coding of the status word is also used in log (P.98) and is defined as follows:

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Bit

hexadecimalcodingMeaning

b31
b30
b29
b28
b27
b26
b25
b24
b23
…
b18
b17

80000000
40000000
20000000
10000000
08000000
04000000
02000000
01000000

AC over voltage
DC over voltage
AC under voltage
DC under voltage
AC voltage below startup level
DC voltage below startup level
AC voltage above Umin2
DC voltage above Umin2-

always 0 (reserved for future use)

b16
b15

00010000
00008000

b14
b13
b12
…
b9
b8

00004000
00002000-b7
b6

00000080
00000040

b5
b4
b3

00000020
00000008

b2

00000004

b1
b0

00000002
00000001

00020000

00000100

Usage in load Usage in log
profile(P.98)

Change of the supply system(Traction Type - C.5.3)
Change of the Consumption Point ID (C.1.9)
Status word has been recorded before the lastclock synchronization
Load profile memory was completely deleted
Logbook was completely deleted*1 depending on
configuration

X *1
X *1
X *1
X *1
X *1
X *1
X *1
X *1

X
X
X
X

X
X
X

always 0 (reserved for future use)
(At least) one configuration variable waschanged by setting
Failure of the supply voltage of the EM4TII+
recovery of the supply voltage of the EM4TII+(always captured in the load profile
synchronously to capture periods)
device clock was set
always 0 (reserved for future use)season change occurred(summer time to winter time or vice versa)
Measurement period are incomplete (due toasynchronous start of period)
power reserve of the device clock is depleted
fatal device error (legal metrological error)

X
X
X

X
X

X

X

X
X
X
X

X

Table 4.5: Status word bit coding
The header is followed by sets of nine (for standard version) measuring values until the next event
generates a new header.
In the standard version the following values are recorded in the load profile:• C.1.9

Consumption Point ID (according to EN 50463-1:2017), a max. 32 ASCII characterscomprehensive text string• C.5.1

Status of this load profile entry ("Quality flag" according to EN 50463-3),
three bytes in the following code:

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1) Status of the time indication (based on the EBIX system):
3DXXXX invalid time information (in case of failure) or time adjustment within themeasurement period to more than two seconds
7FXXXX valid time
Note: Time indication status of 38XXXX isn’t supported according to EN50463:2017
anymore. Instead 3DXXXX will be recorded
2) Status of the energy indication (based on the EBIX system):
XX2EXX replacement value, measured energy value does not exist
XX3DXX invalid energy indication (in case of failure)
XX7FXX valid (measured) energy value3) Status of location information (based on the EBIX system):
XXXX2E no location information available (incorrect or no GPS receiver)XXXX3D location uncertain, last reception of GPS information more than 15 seconds
before the entry of the load profile
XXXX7F valid location information• C.5.3

Traction system (“traction type flag” according to EN 50463-3:2017), which is acombination of frequency and voltage detection.
A system is detected only when voltage and frequency match the expectedcombination. E.g. detection of one parameter only or conflicting detections are flagged
as “undefined system”.
Traction type detection with bit code according to previous version (EM4TII) isavailable on special request (register name: C.5.2).
Traction type detection is based on measurement on channel 1 and in case of ACDCconfiguration on channel 1 and 3
C.5.3 value
00
01
02
03
04
05

Meaning
Undefined, no System recognized
AC System 2: 25kV, 50Hz recognized
AC System 1: 15kV, 16.7Hz recognized
DC System 3: voltage 3000V recognized
DC System 2: voltage 1500V recognized
DC System 1: voltage 600V ... 750V

• 0.9.17

Location (latitude ± DD.XXXXX) at the end of the registration period with
±DD = degrees (positive: north, negative: south)XXXXX = decimal degrees• 0.9.18

Location (longitude ± DDD.XXXXX) at the end of the registration period with
±DDD = degrees (positive: east, negative: west)
XXXXX = decimal degrees
Note: Location output format has been changed according to the requirements of thestandard EN 50463:2017. The input format of coordinates according to NMEA0183 isstill accepted with the old format “DDMM.XXXX”• 1.29.0

energy feed (delta value) of positive active energy• 2.29.0

energy feed (delta value) of negative active energy• 3.29.0

energy feed (delta value) of positive reactive energy• 4.29.0

energy feed (delta value) of negative reactive energy

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4.2.7 Recognition of the traction power system
The EM4TII+ recognizes the currently applied traction power system.
A traction power system is in this sense always understood as a combination of the supply frequency(DC or AC-frequency) and the supply voltage.
Rated voltage values (according to EN 50163:2004) of 600V/750V (DC), 1500V (DC), 3000V (DC),15.000V (16.7 Hz AC), and 25.000V (50Hz AC) can be distinguished.
Tolerances between Umin1 and Umax2 according to EN 50163 are considered as valid for thepermanent operation, except for 750V networks where Umax1 limit is kept in order not to have an
overlap with Umin1 from the 1500V network.
Note: According to the tolerances defined in EN 50163 for permanent operation, a distinction
between the nominal voltages 600V and 750V (DC) is not possible in this context.
In addition to the detection of voltage system, the EM4TII+ recognizes the currently applied supply
frequency. For AC frequencies a valid deviation from the nominal frequencies defined in EN 50163 ina range of ± 9% is assumed.
A system is detected only when voltage and frequency match the expected combination. E.g.
detection of frequency without voltage or AC voltage without matching frequency is flagged as“undefined system”.
To avoid unnecessary detection of short-term irregular supply situations in this context, the applied
traction system is recognized basically with a bounce time of 10s. This applies both in recognizing thepower system after idle state (i.e. after the operation without recognized traction power system) andafter a change in the system for multi-system vehicles. After such a system change, the previously
recognized system is assumed immediately to be no longer active after recognition of the new
system. In this respect, it is ensured that in normal operation only one system is recognized as valid.
Note: "Lab situations”, such as the simultaneous operation with AC and DC, may cause detection of
two systems simultaneously, according to the former traction type definition C.5.2.
According to the new traction type definition (EN 50463-3:2017) conflicting detections are flagged as“undefined system”.
Damage to the EM4TII+ is impossible in such a case, if the maximum input values of voltage andcurrent for the specific device design are not exceeded.
The first occurrence of one of the following events causes a previously recognized traction system tobe assumed as no longer active:• change to a different system (see above)• a loss of a valid frequency detection, if previously an AC system has been detected• a decrease of the traction supply voltage below U min1 (to EN 50163) for more than 120 seconds
if previously a valid supply system has been detected(Note: The duration of 120 seconds corresponds to the regulations of EN 50163)• a decrease in the supply voltage below 30% of the previously detected supply voltage
On the display of the EM4TII+ a flag signalizes the current supply frequency (DC, 16.7 Hz, 50 Hz or
60 Hz) in the case of a detected traction system.

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Furthermore, in the billing load profile any change of the traction system can be stored with theseconds-accurate timestamp (default configuration)
This includes any change (in multi-system vehicles), and the achievement and leaving of any traction
system according to EN 50163.

4.2.8 Error register (F.F)
In the error register the error code is stored due to a device error.
Each of these causes lead to setting of the status "fatal device error" in the status word of the load
profile and the logbook.
Bit
b31
...
b14
b13
b12
b11
b10
b9
b8
b7
b6
b5
b4
b3
b2
b1
b0

hexadecimal
encoding...

Meaning

always 0 (reserved for future use)

00002000
00001000
00000800
00000400
00000200
00000100

Failure to initialize the register structure
Failure to initialize the display output lists
Failure to initialize the ROM memory
Error in the memory area of the OBIS code
Error in the configuration area
Error in calibration area-

always 0 (reserved for future use)

00000020
00000010
00000008
00000004
00000002
00000001

Error in data transfer from the flash memory
Error in data transfer in the flash memory
Error in the checksum in the calibration parameters
Error in the checksum in the firmware code
Error in the checksum in the configuration variables
Error in the checksum in the parameterization variables
Table 4.6: Error register

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4.2.9 Examples of read-outs from the EM4TII+
The following examples of read-outs illustrate how data and parameters are accessed from theEM4TII+.
Note that details in the communication might be realised differently in a specific device.

Blue Data to the meter,
Green Data back from the meter.
1) Read-out from read-out table 1:/?!<CR><LF>/EMH5\@D4EM4TIIW001--<CR><LF><ACK>050<CR><LF><STX>1-0:1.8.0*255(000021363.4*kWh)<CR><LF>
1-0:2.8.0*255(000023003.4*kWh)<CR><LF>
1-0:3.8.0*255(000011706.6*kvarh)<CR><LF>
1-0:4.8.0*255(000023727.3*kvarh)<CR><LF>
0-0:F.F.0*255(00000000)<CR><LF>
1-0:0.0.1*255()<CR><LF>
1-0:0.2.0*255(12300000)<CR><LF>
1-0:0.9.1*255(092925)<CR><LF>
1-0:0.9.2*255(211207)<CR><LF>
0-0:C.1.0*255(11268799)<CR><LF>
0-0:C.72.1*255()<CR><LF>
0-0:C.72.2*255()<CR><LF>
1-0:0.8.4*255(5*min)<CR><LF>
1-0:0.3.0*255(6.00*Imp/kWh)<CR><LF>
1-0:0.2.1*1(21090343)<CR><LF>
1-0:0.2.1*50(21090343)<CR><LF>
0-0:C.90.2*255(574C16C9)<CR><LF>
1-0:C.1.9*255(LU_LE_8251202100021)<CR><LF>!<CR><LF><ETX><FS><SOH>B0<ETX>q2) Reading of date and time with commands 0.9.2 and 0.9.1 (for ex. on 07.12.2021 at 09:31:53 h):/?!<CR><LF>/EMH5\@D4EM4TIIW001--<CR><LF><ACK>051<CR><LF><SOH>P0<STX>()<ETX>`<SOH>P1<STX>(00000000)<ETX>a<ACK><SOH>R5<STX>0.9.1()<ETX>_<STX>0.9.1(093153)<ETX>7<SOH>R5<STX>0.9.2()<ETX>\<STX>0.9.2(211207)<ETX>><SOH>B0<ETX>q3) Writing of date and time:/?!<CR><LF>/EMH5\@D4EM4TIIW001--<CR><LF><ACK>051<CR><LF><SOH>P0<STX>()<ETX>`<SOH>P1<STX>(00000000)<ETX>a<ACK><SOH>W5<STX>1-0:0.9.129*255(2112070933054922)(00000000)<ETX>X<ACK><SOH>B0<ETX>q

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4) Reading of the load profile from Dec 03rd 2021 between 09h20 and 11h40 from a meter measuring
DC-systems only with default setting that any event generates an additional record with the precise
timestamp/?!<CR><LF>/EMH5\@D4EM4TIIW001--<CR><LF><ACK>051<CR><LF><SOH>P0<STX>()<ETX>`<SOH>P1<STX>(00000000)<ETX>a<ACK><SOH>R5<STX>P.01(2112030920;2112031140)<ETX>,<STX>P.01(211203092500)(00000000)(5)(7)(C.1.9)()(C.5.1)()(C.5.3)()(0.9.17)()(0.9.18)()(1.29.0)(kWh)(2.29.0)(kWh)<CR><LF>(DE_EMH_0865483802221)(7F7F7F)(04)(+53.305555)(+010.058406)(00012.0)(00000.0)<CR><LF>(DE_EMH_0865483802221)(7F7F7F)(04)(+53.305503)(+010.058393)(00012.0)(00000.0)<CR><LF>(DE_EMH_0865483802221)(7F7F7F)(04)(+53.305521)(+010.058363)(00012.1)(00000.0)<CR><LF>
P.01(211203093820)(00020000)(5)(7)(C.1.9)()(C.5.1)()(C.5.3)()(0.9.17)()(0.9.18)()(1.29.0)(kWh)(2.29.0)(kWh)<CR><LF>(DE_EMH_0865483802221)(7F7F7F)(00)(+53.305568)(+010.058421)(00007.8)(00000.0)<CR><LF>
P.01(211203094000)(00000004)(5)(7)(C.1.9)()(C.5.1)()(C.5.3)()(0.9.17)()(0.9.18)()(1.29.0)(kWh)(2.29.0)(kWh)<CR><LF>(DE_EMH_0865483802221)(7F7F7F)(00)(+53.305526)(+010.058348)(00000.0)(00000.0)<CR><LF>
P.01(211203094210)(00000080)(5)(7)(C.1.9)()(C.5.1)()(C.5.3)()(0.9.17)()(0.9.18)()(1.29.0)(kWh)(2.29.0)(kWh)<CR><LF>(DE_EMH_0865483802221)(7F7F7F)(00)(+53.305483)(+010.058228)(00000.0)(00000.0)<CR><LF>
P.01(211203101000)(00000040)(5)(7)(C.1.9)()(C.5.1)()(C.5.3)()(0.9.17)()(0.9.18)()(1.29.0)(kWh)(2.29.0)(kWh)<CR><LF>(DE_EMH_0865483802221)(7F7F7F)(00)(+53.305480)(+010.058233)(00000.0)(00000.0)<CR><LF>
P.01(211203101500)(00000000)(5)(7)(C.1.9)()(C.5.1)()(C.5.3)()(0.9.17)()(0.9.18)()(1.29.0)(kWh)(2.29.0)(kWh)<CR><LF>(DE_EMH_0865483802221)(7F7F7F)(00)(+53.305618)(+010.058325)(00000.0)(00000.0)<CR><LF>
P.01(211203101757)(00020000)(5)(7)(C.1.9)()(C.5.1)()(C.5.3)()(0.9.17)()(0.9.18)()(1.29.0)(kWh)(2.29.0)(kWh)<CR><LF>(DE_EMH_0865483802221)(7F7F7F)(03)(+53.305573)(+010.058350)(00001.4)(00000.0)<CR><LF>
P.01(211203102000)(00000004)(5)(7)(C.1.9)()(C.5.1)()(C.5.3)()(0.9.17)()(0.9.18)()(1.29.0)(kWh)(2.29.0)(kWh)<CR><LF>(DE_EMH_0865483802221)(7F7F7F)(03)(+53.305555)(+010.058298)(00017.7)(00000.0)<CR><LF>
P.01(211203102500)(00000000)(5)(7)(C.1.9)()(C.5.1)()(C.5.3)()(0.9.17)()(0.9.18)()(1.29.0)(kWh)(2.29.0)(kWh)<CR><LF>(DE_EMH_0865483802221)(7F7F7F)(03)(+53.305465)(+010.058298)(00043.3)(00000.0)<CR><LF>(DE_EMH_0865483802221)(7F7F7F)(03)(+53.305518)(+010.058351)(00043.2)(00000.0)<CR><LF>(DE_EMH_0865483802221)(7F7F7F)(03)(+53.305520)(+010.058345)(00043.3)(00000.0)<CR><LF>
P.01(211203103832)(00020000)(5)(7)(C.1.9)()(C.5.1)()(C.5.3)()(0.9.17)()(0.9.18)()(1.29.0)(kWh)(2.29.0)(kWh)<CR><LF>(DE_EMH_0865483802221)(7F7F7F)(04)(+53.305521)(+010.058411)(00029.4)(00000.0)<CR><LF>
P.01(211203104000)(00000004)(5)(7)(C.1.9)()(C.5.1)()(C.5.3)()(0.9.17)()(0.9.18)()(1.29.0)(kWh)(2.29.0)(kWh)<CR><LF>(DE_EMH_0865483802221)(7F7F7F)(04)(+53.305468)(+010.058333)(00003.1)(00000.0)<CR><LF>
P.01(211203104500)(00000000)(5)(7)(C.1.9)()(C.5.1)()(C.5.3)()(0.9.17)()(0.9.18)()(1.29.0)(kWh)(2.29.0)(kWh)<CR><LF>(DE_EMH_0865483802221)(7F7F7F)(04)(+53.305465)(+010.058331)(00010.5)(00000.0)<CR><LF>(DE_EMH_0865483802221)(7F7F7F)(04)(+53.305535)(+010.058391)(00010.5)(00000.0)<CR><LF>(DE_EMH_0865483802221)(7F7F7F)(04)(+53.305485)(+010.058313)(00010.5)(00000.0)<CR><LF>(DE_EMH_0865483802221)(7F7F7F)(04)(+53.305458)(+010.058193)(00010.5)(00000.0)<CR><LF>(DE_EMH_0865483802221)(7F7F7F)(04)(+53.305408)(+010.058313)(00010.5)(00000.0)<CR><LF>(DE_EMH_0865483802221)(7F7F7F)(04)(+53.305480)(+010.058385)(00010.5)(00000.0)<CR><LF>
P.01(211203111054)(00000080)(5)(7)(C.1.9)()(C.5.1)()(C.5.3)()(0.9.17)()(0.9.18)()(1.29.0)(kWh)(2.29.0)(kWh)<CR><LF>(DE_EMH_0865483802221)(7F7F7F)(04)(+53.305511)(+010.058326)(00001.9)(00000.0)<CR><LF>
P.01(211203112000)(00000040)(5)(7)(C.1.9)()(C.5.1)()(C.5.3)()(0.9.17)()(0.9.18)()(1.29.0)(kWh)(2.29.0)(kWh)<CR><LF>(DE_EMH_0865483802221)(7F7F7F)(04)(+53.305210)(+010.057843)(00008.4)(00000.0)<CR><LF>
P.01(211203112500)(00000000)(5)(7)(C.1.9)()(C.5.1)()(C.5.3)()(0.9.17)()(0.9.18)()(1.29.0)(kWh)(2.29.0)(kWh)<CR><LF>(DE_EMH_0865483802221)(7F7F7F)(04)(+53.305475)(+010.058233)(00010.5)(00000.0)<CR><LF>(DE_EMH_0865483802221)(7F7F7F)(04)(+53.305421)(+010.058273)(00010.5)(00000.0)<CR><LF>(DE_EMH_0865483802221)(7F7F7F)(04)(+53.305618)(+010.058453)(00010.5)(00000.0)<CR><LF>(DE_EMH_0865483802221)(7F7F7F)(04)(+53.305548)(+010.058445)(00010.5)(00000.0)<CR><LF><ETX><UT><SOH>B0<ETX>q

Note about System change:
The device is suitable for multi-system locomotives as it is designed for measuring DC and / or AC
voltages.
A system change is always detected and reported by the status word (00020000).
Depending on the setting, it may trigger the re-start of the capture period for the load profile (bydefault) as in the example above or it may be reported at the next end of the capture period (as infollowing example below)

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5) Reading of the load profile from Dec 03rd 2021 between 07h00 and 14h30 from a meter withspecific setting that no extra record linked to an event (only on recording period)/?!<CR><LF>/EMH5\@D4EM4TIIW001--<CR><LF><ACK>051<CR><LF><SOH>P0<STX>()<ETX>`<SOH>P1<STX>(00000000)<ETX>a<ACK><SOH>R5<STX>P.01(2112030700;2112031430)<ETX>"<STX>P.01(211203071000)(00000040)(5)(9)(C.1.9)()(C.5.1)()(C.5.3)()(0.9.17)()(0.9.18)()(1.29.0)(kWh)(2.29.0)(kWh)(3.29.0)(kvarh)(4.29.0)(kvarh)<CR><LF>(LU_LE_8251202100021)(7F7F2E)(00)(+00.000000)(+000.000000)(00000.0)(00000.0)(00000.0)(00000.0)<CR><LF>
P.01(211203071500)(00000000)(5)(9)(C.1.9)()(C.5.1)()(C.5.3)()(0.9.17)()(0.9.18)()(1.29.0)(kWh)(2.29.0)(kWh)(3.29.0)(kvarh)(4.29.0)(kvarh)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(00)(+53.305550)(+010.058261)(00000.0)(00000.0)(00000.0)(00000.0)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(00)(+53.305441)(+010.058176)(00000.0)(00000.0)(00000.0)(00000.0)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(00)(+53.305486)(+010.058306)(00105.5)(00000.0)(00000.0)(00061.0)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(00)(+53.305458)(+010.058310)(00487.7)(00000.0)(00000.0)(00281.9)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(00)(+53.305491)(+010.058350)(00487.6)(00000.0)(00000.0)(00282.0)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(00)(+53.305516)(+010.058325)(00487.6)(00000.0)(00000.0)(00281.9)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(00)(+53.305453)(+010.058351)(00487.7)(00000.0)(00000.0)(00282.0)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(00)(+53.305440)(+010.058266)(00487.7)(00000.0)(00000.0)(00281.9)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(00)(+53.305645)(+010.058405)(00487.7)(00000.0)(00000.0)(00282.0)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(00)(+53.305618)(+010.058403)(00487.6)(00000.0)(00000.0)(00282.0)<CR><LF>
P.01(211203080500)(00020000)(5)(9)(C.1.9)()(C.5.1)()(C.5.3)()(0.9.17)()(0.9.18)()(1.29.0)(kWh)(2.29.0)(kWh)(3.29.0)(kvarh)(4.29.0)(kvarh)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305565)(+010.058495)(00295.9)(00407.6)(00235.0)(00172.8)<CR><LF>
P.01(211203081000)(00000000)(5)(9)(C.1.9)()(C.5.1)()(C.5.3)()(0.9.17)()(0.9.18)()(1.29.0)(kWh)(2.29.0)(kWh)(3.29.0)(kvarh)(4.29.0)(kvarh)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305515)(+010.058330)(00000.0)(01085.7)(00627.1)(00000.0)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305570)(+010.058408)(00000.0)(01085.8)(00627.2)(00000.0)<CR><LF>
P.01(211203082000)(000000C0)(5)(9)(C.1.9)()(C.5.1)()(C.5.3)()(0.9.17)()(0.9.18)()(1.29.0)(kWh)(2.29.0)(kWh)(3.29.0)(kvarh)(4.29.0)(kvarh)<CR><LF>(LU_LE_8251202100021)(7F7F2E)(01)(+00.000000)(+000.000000)(00000.0)(00485.0)(00280.1)(00000.0)<CR><LF>
P.01(211203082500)(00000000)(5)(9)(C.1.9)()(C.5.1)()(C.5.3)()(0.9.17)()(0.9.18)()(1.29.0)(kWh)(2.29.0)(kWh)(3.29.0)(kvarh)(4.29.0)(kvarh)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305416)(+010.058290)(00000.0)(01085.7)(00627.2)(00000.0)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305451)(+010.058350)(00000.0)(01085.8)(00627.2)(00000.0)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305490)(+010.058341)(00000.0)(01085.8)(00627.2)(00000.0)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305506)(+010.058346)(00000.0)(01085.8)(00627.2)(00000.0)<CR><LF>
P.01(211203084500)(00020000)(5)(9)(C.1.9)()(C.5.1)()(C.5.3)()(0.9.17)()(0.9.18)()(1.29.0)(kWh)(2.29.0)(kWh)(3.29.0)(kvarh)(4.29.0)(kvarh)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(00)(+53.305483)(+010.058335)(00000.0)(00332.8)(00192.2)(00000.0)<CR><LF>
P.01(211203085000)(00000000)(5)(9)(C.1.9)()(C.5.1)()(C.5.3)()(0.9.17)()(0.9.18)()(1.29.0)(kWh)(2.29.0)(kWh)(3.29.0)(kvarh)(4.29.0)(kvarh)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(00)(+53.305453)(+010.058350)(00000.0)(00000.0)(00000.0)(00000.0)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(00)(+53.305461)(+010.058301)(00000.0)(00000.0)(00000.0)(00000.0)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(00)(+53.305466)(+010.058320)(00000.0)(00000.0)(00000.0)(00000.0)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(00)(+53.305500)(+010.058346)(00000.0)(00000.0)(00000.0)(00000.0)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(00)(+53.305506)(+010.058360)(00000.0)(00000.0)(00000.0)(00000.0)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(00)(+53.305468)(+010.058311)(00000.0)(00000.0)(00000.0)(00000.0)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(00)(+53.305476)(+010.058331)(00000.0)(00000.0)(00000.0)(00000.0)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(00)(+53.305495)(+010.058361)(00000.0)(00000.0)(00000.0)(00000.0)<CR><LF>(LU_LE_8251202100021)(7F7F2E)(00)(+00.000000)(+000.000000)(00000.0)(00000.0)(00000.0)(00000.0)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(00)(+53.305473)(+010.058321)(00000.0)(00000.0)(00000.0)(00000.0)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(00)(+53.305481)(+010.058275)(00000.0)(00000.0)(00000.0)(00000.0)<CR><LF>
P.01(211203094500)(00000080)(5)(9)(C.1.9)()(C.5.1)()(C.5.3)()(0.9.17)()(0.9.18)()(1.29.0)(kWh)(2.29.0)(kWh)(3.29.0)(kvarh)(4.29.0)(kvarh)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(00)(+53.305433)(+010.058290)(00000.0)(00000.0)(00000.0)(00000.0)<CR><LF>
P.01(211203101000)(00000040)(5)(9)(C.1.9)()(C.5.1)()(C.5.3)()(0.9.17)()(0.9.18)()(1.29.0)(kWh)(2.29.0)(kWh)(3.29.0)(kvarh)(4.29.0)(kvarh)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(00)(+53.305473)(+010.058296)(00000.0)(00000.0)(00000.0)(00000.0)<CR><LF>
P.01(211203101500)(00000000)(5)(9)(C.1.9)()(C.5.1)()(C.5.3)()(0.9.17)()(0.9.18)()(1.29.0)(kWh)(2.29.0)(kWh)(3.29.0)(kvarh)(4.29.0)(kvarh)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(00)(+53.305430)(+010.058303)(00000.0)(00000.0)(00000.0)(00000.0)<CR><LF>
P.01(211203102000)(00020000)(5)(9)(C.1.9)()(C.5.1)()(C.5.3)()(0.9.17)()(0.9.18)()(1.29.0)(kWh)(2.29.0)(kWh)(3.29.0)(kvarh)(4.29.0)(kvarh)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305443)(+010.058320)(00297.1)(00000.0)(00296.8)(00000.0)<CR><LF>
P.01(211203102500)(00000000)(5)(9)(C.1.9)()(C.5.1)()(C.5.3)()(0.9.17)()(0.9.18)()(1.29.0)(kWh)(2.29.0)(kWh)(3.29.0)(kvarh)(4.29.0)(kvarh)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305468)(+010.058286)(00443.1)(00000.0)(00442.4)(00000.0)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305483)(+010.058326)(00443.0)(00000.0)(00442.5)(00000.0)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305476)(+010.058336)(00443.1)(00000.0)(00442.4)(00000.0)<CR><LF>

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(LU_LE_8251202100021)(7F7F7F)(01)(+53.305450)(+010.058311)(00444.2)(00000.0)(00244.3)(00196.1)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305468)(+010.058291)(00442.8)(00000.0)(00000.0)(00442.8)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305475)(+010.058325)(00442.9)(00000.0)(00000.0)(00442.8)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305476)(+010.058393)(00442.9)(00000.0)(00000.0)(00442.8)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305458)(+010.058358)(00442.8)(00000.0)(00000.0)(00442.8)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305363)(+010.058123)(00442.9)(00000.0)(00000.0)(00442.8)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305228)(+010.058118)(00442.9)(00000.0)(00000.0)(00442.8)<CR><LF>
P.01(211203111500)(00000080)(5)(9)(C.1.9)()(C.5.1)()(C.5.3)()(0.9.17)()(0.9.18)()(1.29.0)(kWh)(2.29.0)(kWh)(3.29.0)(kvarh)(4.29.0)(kvarh)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305366)(+010.058188)(00082.7)(00000.0)(00000.0)(00082.6)<CR><LF>
P.01(211203112000)(00000040)(5)(9)(C.1.9)()(C.5.1)()(C.5.3)()(0.9.17)()(0.9.18)()(1.29.0)(kWh)(2.29.0)(kWh)(3.29.0)(kvarh)(4.29.0)(kvarh)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305603)(+010.058386)(00352.8)(00000.0)(00000.0)(00352.8)<CR><LF>
P.01(211203112500)(00000000)(5)(9)(C.1.9)()(C.5.1)()(C.5.3)()(0.9.17)()(0.9.18)()(1.29.0)(kWh)(2.29.0)(kWh)(3.29.0)(kvarh)(4.29.0)(kvarh)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305563)(+010.058426)(00442.9)(00000.0)(00000.0)(00442.8)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305580)(+010.058376)(00442.9)(00000.0)(00000.0)(00442.8)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305535)(+010.058368)(00442.8)(00000.0)(00000.0)(00442.8)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305500)(+010.058426)(00442.9)(00000.0)(00000.0)(00442.8)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305511)(+010.058395)(00442.9)(00000.0)(00000.0)(00442.8)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305491)(+010.058433)(00078.6)(00362.3)(00000.0)(00444.1)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305465)(+010.058350)(00000.0)(00442.9)(00000.0)(00442.9)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305466)(+010.058370)(00000.0)(00443.0)(00000.0)(00442.9)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305483)(+010.058340)(00000.0)(00442.9)(00000.0)(00442.9)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305471)(+010.058366)(00000.0)(00443.0)(00000.0)(00442.9)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305513)(+010.058381)(00000.0)(00442.9)(00000.0)(00442.9)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305518)(+010.058420)(00000.0)(00443.0)(00000.0)(00442.9)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305535)(+010.058411)(00000.0)(00442.9)(00000.0)(00442.9)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305520)(+010.058345)(00000.0)(00443.0)(00000.0)(00442.9)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305505)(+010.058326)(00000.0)(00442.9)(00000.0)(00442.9)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305508)(+010.058380)(00000.0)(00443.0)(00000.0)(00442.9)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305473)(+010.058346)(00000.0)(00443.0)(00000.0)(00442.9)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305313)(+010.057993)(00000.0)(00442.9)(00000.0)(00442.9)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305563)(+010.058351)(00000.0)(00443.0)(00000.0)(00442.9)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305545)(+010.058300)(00000.0)(00442.9)(00000.0)(00442.9)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305503)(+010.058333)(00000.0)(00443.0)(00000.0)(00442.9)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305558)(+010.058346)(00000.0)(00443.0)(00000.0)(00443.0)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305420)(+010.058388)(00000.0)(00443.0)(00000.0)(00442.9)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305488)(+010.058311)(00000.0)(00442.9)(00000.0)(00442.9)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305440)(+010.058336)(00000.0)(00443.0)(00000.0)(00442.9)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305490)(+010.058343)(00000.0)(00443.0)(00000.0)(00442.9)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305446)(+010.058286)(00000.0)(00442.9)(00000.0)(00443.0)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305458)(+010.058335)(00000.0)(00443.0)(00000.0)(00442.9)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305508)(+010.058345)(00000.0)(00443.0)(00000.0)(00442.9)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305480)(+010.058286)(00000.0)(00443.0)(00000.0)(00442.9)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305411)(+010.058055)(00000.0)(00442.9)(00000.0)(00443.0)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305431)(+010.058235)(00000.0)(00443.0)(00000.0)(00442.9)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305451)(+010.058255)(00000.0)(00443.0)(00000.0)(00442.9)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305471)(+010.058285)(00000.0)(00443.0)(00000.0)(00443.0)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(01)(+53.305453)(+010.058276)(00000.0)(00443.0)(00000.0)(00442.9)<CR><LF>
P.01(211203142000)(00020000)(5)(9)(C.1.9)()(C.5.1)()(C.5.3)()(0.9.17)()(0.9.18)()(1.29.0)(kWh)(2.29.0)(kWh)(3.29.0)(kvarh)(4.29.0)(kvarh)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(00)(+53.305438)(+010.058251)(00000.0)(00038.3)(00000.0)(00038.3)<CR><LF>
P.01(211203142500)(00000000)(5)(9)(C.1.9)()(C.5.1)()(C.5.3)()(0.9.17)()(0.9.18)()(1.29.0)(kWh)(2.29.0)(kWh)(3.29.0)(kvarh)(4.29.0)(kvarh)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(00)(+53.305493)(+010.058331)(00000.0)(00000.0)(00000.0)(00000.0)<CR><LF>(LU_LE_8251202100021)(7F7F7F)(00)(+53.305425)(+010.058295)(00000.0)(00000.0)(00000.0)(00000.0)<CR><LF><ETX><ETB><SOH>B0<ETX>q6) Reading of a single register (1.8.0 as example):/?!<CR><LF>/EMH5\@D4EM4TIIW001--<CR><LF><ACK>051<CR><LF><SOH>P0<STX>()<ETX>`<SOH>P1<STX>(00000000)<ETX>a<ACK><SOH>R5<STX>0:1.8.0()<ETX>T<STX>0:1.8.0(001623154.7*kWh)<ETX>`<SOH>B0<ETX>q

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4.3

Data input for GPS receiver connection

The EM4TII+ is equipped optionally with a dedicated serial input (RS232 type) to be connected to a
GPS receiver system. The output signal of this interface (TX) is not used and can be left
unconnected.
On this interface, an RMC (Recommended Minimum Sentence C) data set according to NMEA 0183
sent with 4800 Baud is expected by the EM4TII+ every second or 2 seconds (max).
The location information contained in these GPS data sets are used in the formation of the load
profile. The input format of coordinates according to NMEA0183 is still accepted with the old format“DDMM.XXXX”
The EM4TII+ evaluates from the GPS receiver the dataset “$GPRMC” entities only.
Other datasets are ignored. Nevertheless, other datasets should be limited to avoid a buffer overflow.
A data connection with 4800 Baud can transfer 480 characters per second. If possible, avoid sending
more than 240 characters per second.
The time information included in the GPS signal is used for automatically synchronization of thebuilt-in real time clock.

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5.

Maintenance

The meter is maintenance-free. With damages (e.g. caused by transportation or storage) no repairs
may be carried out. Once the meter has been opened, all warranty claims cease. This also applies if
a defect can be traced back to external influences (e.g. fire, extreme temperature- and weather
conditions, incorrect or careless use or treatment).
The battery (Li-SOCl2 technology, 3.6V, non-rechargeable) must be replaced when the cursor “CLK”
appears in the display. The user must not perform this replacement. A replacement of the battery is
recommended during every re-verification process or after 10 years operation.
The data retention time of the flash memory (non-volatile) is at least 10 years.
Please note that the re-verification period of the EM4TII+ may be subject to national or international
legal requirements. Recommended re-verification period is at least 10 years.

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6.

Measurement

6.1

Measuring principle

The load profiles are recorded in datasets at parameterized intervals.
The measuring circuit comprises a Sigma Delta ADC for each measuring channel which enables
simultaneous capturing of measured values at a sample rate of 4800 Hz. The Sigma Delta method
effectively suppresses high-frequency interference on the channels.
The microprocessor reads in the sampled values and calculates the active power and active energy
over adjustable intervals (standard value = 5 min). The datasets are backed up in Flash memories.
The supply voltage can be selected between 24 and 110V as per EN 50155. Optionally acommunication unit (modem) can be supplied with voltage of 12 V via the EM4TII+.

6.2

Formula: generation of measured values

Measured values are generated at one second intervals from 4800 sample values:

4800

N

Effective voltage value

U eff ,1s =

∑ un2
n =1

N

4800

∑i

=

∑u
n =1

4800

2
n

Effective current value

I eff ,1s =Active power

P =1 4800∑ u n ⋅ in
4800 n=1

Reactive powerQ=

1 4800∑ u90 n ⋅ in
4800 n =1

un
u90 n
in
N

n =1

2
n

4800

: Sample value for voltage at time point n: Sample value for voltage at time point n shifted by 90°: Sample value for current at time point n: Interval of the measuring period from N sample values (4800Hz sample rate)

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7.

Technical data

7.1

General specifications

Measuring input channels

Ranges for rated input values
Rated voltage (secondary)
Rated current (secondary)
AccuracyFrequency
Sampling interval
ADC resolution
Load profile

Clock accuracy
Interfaces

Display
Degree of protection
Supply voltage
Supply voltage for modem(optional)
Temperature ranges
Altitude range Application area
Connections
Dimensions
Weight

16August2023/V3.0

4 galvanic isolated inputs for connection of U- and I-sensors(either for AC, DC or ACDC), orfor connection of one U-sensor (DC) and up to three
I-sensors (DCDCDC)
AC: 70 – 300 V or 17,9 – 100 mA
DC: 17,9 – 100 mA
AC: 62.5 – 2000 mA or 5A
DC: 62.5 – 2000 mA
Class 0,5 R (acc. to EN 50463-2) for ranges specified in theline above.
In case of rated input values out these limits or for a multisystem energy meter the class accuracy may be higher (0,75R
or 1,0R).
DC, 16,7 Hz, 50Hz and 60 Hz
4800 Hz
16 BitRecording of consumed and regenerated active and reactiveenergy, units kWh or kvarh
Recording period length min. 1 minute
Recording of location and status information according to
EN 50463-3
Memory depth at least 300 days for 5-minute period length (60days for 1 minute period length)< 20 ppm
1 x RS-interface (bidirectional, RS232, RS422 or RS485) with
2 connections in parallel (screw terminals and pin header), e.g.
for modem connection; data protocol according to EN 50463-3
and IEC 62056-21.
1 x RS232 (unidirectional) for registration of GPS-data
telegrams according to NMEA 0183
LCD, self-luminous, letter height approx. 4 mm
IP 65
24 – 48 or 72 – 110 V (according to EN 50155),
Power consumption (without modem) 3 W,
Inrush current 500 mA max (without modem supply)
12 V continuous load 3W, peak value 6W
Operating temperature: -40 °C – +75 °C (limited legibility of thedisplay screen is to be expected between –40 °C and –30 °C)
Storage temperature: -40 °C – +85 °C
EN 50125-1:2014: Class A1 (max. 1400m)
Terminal blocks inside the device
165 x 289 x 70 mm (W x H x D)
approx. 1,5 kg

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7.2

Applied standards and regulations

EN 50463:2017

Railway application –Energy measurement on board trains

EN 50155:2017

Railway applications –Electronic equipment used on rolling stock

EN 50121-3-2: 2016

Railway applications - Electromagnetic compatibility Part 3-2: Rolling stock – Apparatus

EN 61373:2010

Railway applications - Rolling stock equipment - Shock andvibration tests

EN 50124-1: 2017

Railway applications - Insulation coordination - Part 1:
Basic requirements - Clearances and creepage distances forall electrical and electronic equipment

IEC 62056-21:2002

Electricity metering - Data exchange for meter reading, tariffand load control - Part 21: Direct local data exchange

EN 50163:2004/A1:2007

Railway applications - Supply voltages of traction systems

16August2023/V3.0

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