LA25 IO-Link
Quick Guide
v1.2

LINAK.COM/TECHLINE

LA25 IO-Link |2Connection Diagram
Fig. 1: 25xxxxxxxxxxAB1x=xxxxxxxxxxxxx

M12 connector
2L+ V DC +2M GND -L+C/Q

L-DataServiceInterface

BROWN

2BLUE

5+ RED

1GREEN

4The LA25 with IO-Link and M12 connector is a plug-and-play solution. If flying
leads is the preferred option, please beaware that the LINAK® cable colours
differ from the IO-Link standard.
The cable colours from the actuator andthe M12 port numbers are specified inthe table below.
In a setup where the Violet and White
wires are not used, we strongly recommend insulating these to avoid shortcircuits and eventually damaging theactuator.
Connectsto- BLACK

3Actuator

M12 PortClass B

2L+Brown

22M

Blue

5L+

Red

1C/Q

Green

4L-Black

3VIOLETL+

Data GND

WHITE

12L+

2

5C/Q

432M
LM12 Plug on device

Please be aware that if the power supply is not properly connected, you might damage the actuator!

An IODD file describes the IO-Link parameters for easy PLC configuration. The newest version isavailable online at the official IO-Link IODDfinder.

LA25 IO-Link |I/O specifications
Input/Output

Description

Brown(M12 port 2)
2L+

Blue
(M12 port 5)
2M
Red(M12 port 1)
L+Specification

Comments

IO-Link is standardised IO technology (IEC61131-9) for the communication with actuators.
The point-to-point communication is based on
the long-established actuator connection
without additional requirements regarding thecable material. IO-Link is no fieldbus but thefurther development of the existing, tried-andtested connection technology for actuators.
Power supply motor +24 V DC + (VCC)
Connect Brown to positive

Power supply motor 24 V DC - (GND)
Connect Blue to negative

IO-Link supply +18 - 30 V DC +Note:
Do not change the power supply polarity on theBrown and Blue wires!
Power supply GND (-) is electrically connected tothe housing.
Current limit levels can be adjusted throughBusLink.
If the temperature drops below 0°C, all current
limits will automatically increase to 6 A for 24 V.
24 V ± 10% - 2.5 A at max load
24 V, current limit 4 A
On voltage:
18 to 30 VL+

12L+Black(M12 port 3)
L-IO-Link supply 18 - 30 V DC - (GND)

Green(M12 port 4)
C/Q

IO-Link C/Q(data communication)

VioletService interface

WhiteService interface GND

Yellow

Not used

25C/Q

432M
LM12 Plug on device

M12 plug on device - pin numbering andconnections.
IO-Link is fieldbus independent and can be integrated into all fieldbus systems worldwide.
Transmission rate: 38.4 kbaud (COM 2)
Max cable length: 15 meters
The IODD file describes the parameters - find ithere.
Only BusLink can be used as service interface.
Make sure that the Violet and White wires are
not short-circuited3

LA25 IO-Link |PD - Process Data
Process data includes both input and output data, and these are typically cyclically exchanged between theIO-Link master and the LA25 actuator. The tables below provide an overview of the input and output data.

PD - Input
Byte 7

Byte 6

Byte 5

Byte 4

Byte 3

Byte 20xFF

0xFF

0xFF

ErrorsStatusActual current

Data name:

Byte

Field size

Actual position

0-1

16 bitActual current consumption

28 bitStatus3Errors

4

Reserved

5-78 bit

8 bit

Byte 1

Byte 0

Actual position

Details
0x0000 - 0xFFEF [0-65519]:

Actual position (0.1 mm/bit)

0xFFFF [65535]:

Position lost

0x00 - 0xFF [0-255]:

Measured current (0.25 A/bit)

B0: Endstop signal out

B3: Running out

B1: Endstop signal in

B4: Running in

B2: Overcurrent

Bitwise encoding

0 = No error

6 = Need stop command

1 = Hall error

7 = Temperature error

2 = Overvoltage

8 = Heartbeat error (internal)

3 = Undervoltage

9 = SMPS error (internal)

4 = Communication sync error

10 = Current measurement

5 = Endstop signal error

Numerical encoded

8 bit

Always 0xFF

PD - Output
Byte 7

Byte 6

Byte 5

Byte 4

Byte 3

Byte 20xFF

0xFF

0xFF

0xFF

Set speed

Set current

Byte

Field size

Data nameSet position(Run command)

0-1

16 bitByte 1

Byte 0Set position

Details
0x0000 - 0xFFEF [0-65519]:

Run to position (0.1 mm/bit)

0xFFFB - 0XFFF0 [65520-65531]:

Reserved

0xFFFC [65532]:

Clear error

0xFFFD [65533]:

Run out

0xFFFE [65534]:

Run in0xFFFF [65535]:

Stop

Set maximum current

28 bit0x00 - 0xFF [0-255]: 255 = default

Max. current (0.25 A/bit)

Set speed

38 bit0x00 - 0xFF [0-255]: ≥ 200 = max

Speed (0.5 %/bit)Reserved

4-7

8 bit

Always 0xFF

4

LA25 IO-Link |5Parameter and diagnostic data
On the IO-Link master, there are standard IO-Link parameters available, e.g. Product ID and firmware
revision. There are also LINAK® specific parameters available - these include configuration of the behaviour inoutwards and inwards direction and historic usage data used for diagnostics.

READ ONLYREAD AND WRITE

LINAK specific parameters
Index

Field size

Description

Comment

Resolution/encoding

4096

U8Current limit out

4097

U8Current limit in

Set a default current limit

0.25 A/bit

4098

U16

Soft start time out

4099

U16

Soft start time in

Set ramp-up speed settings

1 ms/bit

4100

U16

Soft stop time out

Set ramp-down speed settings

4101

U16

Soft stop time in(0 = instant stop or set a value ≥ 300 ms)

4103

U16

Virtual limit - outwards

Set a virtual limit to stop before the physical

4104

U16

Virtual limit - inwards

endstop

4107

U32

Unique identification number

4111

U32

Software configuration number

4113

U84115

1 ms/bit

0.1 mm/bit

General information

U32 number

Max. current seen

Monitor the max. current level (A)0.25 A/bit

U8Max. temperature seen

Monitor the min. and max.

4116

U8

Lowest temperature seen

temperature level (°C)

4118

U32

Total runtime

Monitor the total runtime (s)

4119

U16

Reason for last stop(error codes)

1 °C/bit (-40 °C offset)

1 s/bit

0 = none, 1 = H-bridge fault, 2 = Temperature error, 4 = Undervoltage, 8 = Overcurrent,
16 = Internal PSU failure, 32 = EOS fault, 64 = Hall fault, 256 = Overvoltage,
512 = Position not changing, 1024 = Current measurement HW failure

4126

U8

Number of LINAK current overloads out

4127

U8

Number of LINAK current overloads in

4128

U8

Number of customer overloads out

4129

U8

Number of customer overloads in

4131

U32

Number of endstop reached out

4132

U32

Number of endstop reached in

4133

U32

Number of starts out

4134

U32

Number of starts in4135

U32

Total piston distance

Monitor the distance travelled (m)5 m/bit4136

U32

Actuator production order numberGeneral information

U32 number

Monitor the number of times the actuator has
stopped on the factory set current limit

Monitor the number of times the actuator has
stopped on the customer specific current limit
1 time/bit
Monitor the number of endstop signals in eachdirection

Monitor the number of starts in eachdirection

LA25 IO-Link |6

Checklist - First time installation
To guide you through the process of integrating the first LA25 IO-Link into your system, the following checklist provides the most important steps to consider:

Configure the IO-Link master to “Type B / Class B”

Make sure that the amperage rating of the IO-Link master port is sufficient (min. 2 A)
If not, we strongly recommend powering the motor separately

Plug in the M12 connector or wire up the actuator with flying leads to the master

Make sure you receive data from the actuator
Indicating that communication is OK

Make sure that the data order is correct

Send a “clear error command”
0xFFFC or 65532

Start moving!

LA25 IO-Link |FAQ - Troubleshooting
Based on previous input from our customers, the following answers to frequently asked questions may help
you troubleshoot an actuator in an IO-Link network.

Does the actuator support data storage?
The current version (v.1.1) of LA25 IO-Link does not support data storage.
Where can I find the latest IODD file?
On the official IODD Finder, you can always find the latest version for LA25 - visit ioddfinder.io-link.com
Why is the actuator not running despite giving it a run command?
If the actuator is not running when applying a run command (0xFFFD/65533 for out and 0xFFFE/65534
for in), please check the following:
1. Make sure power is applied from the power supply
2. Send a “clear error” (0xFFFC/65532) command before sending a run command
Why do I get feedback (data) but the actuator is unable to run?
The LA25 is designed with a split supply PCB. This means that an IO-Link master can receive data from theactuator despite not supplying 24 V DC to the motor itself from a power supply.
1. Make sure power is applied from the power supply to the Brown and Blue wires - see port configuration (Class B)
2. If the actuator is powered directly from the master, this must meet the amp requirements as
specified on the product label (max. 2.5 amps on a standard LA25)
Why does the PLC show a reversed data order?
On most PLCs and IO-Link masters, the IODD file will ensure the correct order of data input/output bytes
according to the table above. However, some controllers may reverse the data order. Please make sure thecorrect Most Significant Byte [MSB] and Least Significant Byte [LSB] is matching your configuration.
If you experience maximum feedback data values (position, current and/or speed), 0xFF [255] for byte datatypes and 0xFFFF [65535] for integer data types, the order is most likely reversed.
What has the highest priority - process or parameter and diagnostic data?
Commonly referred to as cyclic and acyclic data. For example, current limit value in amps can be set in both
cyclic and acyclic data. In this case, the lowest value determines when the actuator will stop.

Still experiencing problems with your actuator?
Please contact your local LINAK® office for technical support.

7

LA25 IO-Link |Declaration of Conformity

8

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