SiteManager™ xx29, xx39 and xx49
Working with I/O Ports

This document describes how to operate the I/O ports of the SiteManager.

This document is supplementary to the “SiteManager Initial Contact” leaflets
and the SiteManager product data sheets. These publications can be found on
the Secomea web site.
This guide is applicable to SiteManager firmware version 5.9 (15123) or newer.

Version 3.1, March 20, 2015
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Table of ContentsIntroduction3

1.

About GND, 0V GND and Shield

32.

Digital Input Ports (ALL SiteManager models)

4

2.1.

Electrical information

42.2.

Digital Input ports default functionality

42.3.

Low-side Output switching equipment example

42.4.

High-side Output switching equipment example

52.5.

Changing Input 1 default functionality

5

2.6.

Defining Input port Alerts

63.

Digital Output Ports

7

3.1.

Digital Output ports - Electrical information

7

3.2.

Low-side Input switching equipment example.

8

3.3.

High-side Input switching equipment example.

94.

Relay Output Port (isolated)

10

4.1.

Relay output ports - Electrical information

10

4.2.

Low-side Input switching equipment example.

104.3.

High-side Input switching equipment example

105.

Output ports default functionality

11

5.1.

Manual toggling of Output port state

12

Notices

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Introduction
SiteManagers are equipped with 2 x input- and 2 x output ports that can beused to extend the primary functionality of the SiteManager.
The Input ports can be used to trigger alerts sent as Email or SMS messages from the GateManager, or trigger an SMS sent from SiteManager itself(SMS alerts are only applicable to xx39 models with integrated 3G modems).
Additionally an Input port can be used to control when remote access is possible.
The Output ports can be used to trigger a signal to e.g. a PLC or HMI, basedon manually toggling of a button in the SiteManager GUI. Additionally anOutput port can signal when remote access is made via the SiteManager, or
simply when the SiteManager is connected to the GateManager.

1.

About GND, 0V GND and ShieldOn the SiteManager the power should be applied between GND and +V asshown.
Models: 10xx, 14xx, 32xx, 34xx

Models: 11xx, 33xx

Voltage 12-48V

Voltage: 12-24V

On some industrial equipment, you will find that power should be supplied
between terminals marked -V or 0V and +V, and where -V/0V, GND andShield may have different potentials. The specifications for a USB port is that
GND and Shield should have the same potential, and since the SiteManager
has a USB port, the GND and Shield is per design short circuited internally.
It is also intentional that there are no separate -V/0V pins on theSiteManager, since the presence of the USB port would make it extremely
difficult to protect the power regulation circuitry in the SiteManager, should
you by accident apply voltage between -V/0V and GND.
This would typically not be an issue even in cases where GND and Shield
are wired separately.

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2.

Digital Input Ports (ALL SiteManager models)
IMPORTANT: Examples in the following are only for illustration of the functionality. Always consult the specifications of the equipment you intend toconnect.

2.1. Electrical information
Input port toggling on the SiteManager would typically be controlled by amechanical switch or a relay connected to the GND and Input terminals. TheInput port is when not connected in “Open state” (inactive) that corresponds
to a connected mechanical switch is turned OFF. An input toggles to “Closestate” (ON) when pulled from 2.34 V or above to 0.16 V or below.
The behavior for input voltages between 0.16 V and 2.34 V is undefined.
In the SiteManager there is an internal 10 Kohm pull-up resistor to 3.3 V, soan unconnected input port is in the “OFF” state.

2.2. Digital Input ports default functionality
Input port 1 is default assigned to toggle GateManager Access. By connecting a simple on/off switch you can control when remote service should be allowed (see also section 2.5 Changing Input 1 default functionality)
Input port 2 is not associated with anything as default.

2.3. Low-side Output switching equipment example
When a digital input port of the SiteManager is connected to equipment thathas “low-side switching” conductor connections on the output, you can use
the SiteManager input ports directly without any external components (suchas pull up resistors or relays).
A typical use is the following, where a mechanical single pole switch is connected between Input 1 and GND.
+24V

SM+V

In1

GND0V

This exploits the default use of Input 1, which is to control the remote access. Short circuit of Input 1 and GND will by default disable theGateManager connection.

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2.4. High-side Output switching equipment example
When an input port of the SiteManager is connected to equipment that has“high-side switching” connections on the output, you must apply a circuitry topull the output towards zero.
The following example uses a 24V relay, which subsequently assumes theoutput of the equipment to support 24V operation (the coil voltage).
SM+24V(24V high-side switching)

+V

24V

In1Output
24V relay

GND0V0V

2.5. Changing Input 1 default functionality
As mentioned previously, Input 1 by default controls remote access.
In the SiteManager menu System > I/O you can determine if the default action is enabled, which is the case in this screen shot:

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If you want to use Input 1 for another purpose, you can disable the current
action. Enter the menu GateManager > General and press the [More>>]button. The control of the "Input 1 Action" will be shown, and you can define
it to trigger and alert instead.

2.6. Defining Input port Alerts
Alerts resulting from triggering Input ports can be sent locally from a
SiteManager as SMS (xx39 models only), or via the GateManager as Emailor SMS (all models).
Refer to the separate guide “SiteManager Working with SMS and EmailAlerts” available in the support section on the Secomea web site.

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3.

Digital Output Ports
NOTE: This section applies to:
Output port 1 and 2 for models 10xx, 14xx, 32xx, 34xx
Output port 2 only for Models 11xx and 33xx

3.1. Digital Output ports - Electrical information
The digital output ports are of the “open drain” kind, which means that (justlike a switch) no voltage is output by the port itself, but must be controlledfrom a circuitry supplied by an external source (max 24V) or from the Vout(5V) pin.
Do NOT apply voltage (e.g. 24V) directly to a SiteManager Digital Output port, as this could permanently damage the port.
In the “OFF” (inactive) state, the impedance is min 24 Mohm; in the “ON”(active) state, the impedance is max 0.5 ohm.
Maximum sink current is 0.2A, which means the Output port is protected by0.2A fuses mounted in extension to the FET transistors of the Output ports;
but it is still very important to dimension the external circuitry to not overload
the ports. At 24V you should therefore apply pull-up resistors at minimum
24V/0.2A = 120 ohm (24V*0.2A = 4.8W), but it is recommended to not exceed 3W, meaning a pull-up resistor of 220 ohm is recommended. Thesepull-up resistors must be applied externally, unless you are using a relay
which has high enough impedance.
A 12V or 24V relay can be applied to an output port directly if the relay issupplied with the corresponding working voltage (12V or 24V respectively)
and with a "trigger current" at max 0,2A. (A larger relay would require morecurrent, and subsequently would require an additional "assisting" relay for
the SiteManager output ports to trigger it)

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3.2. Low-side Input switching equipment example.
When a digital output port of the SiteManager is connected to equipmentthat has “low-side switching” conductor connections on the input, you canuse the SiteManager’s digital output ports directly without any external components (such as pull up resistors or relays).
SM+24V( low-side switching)+V

24VVoutInput

Digital OutGND0V0V

With a “trigger current” of 0,2A, the digital ports of the SiteManager should
also be powerful enough to pull a relay directly (even an electromechanicalone).
You could also choose to control e.g. a 24V LED light tower up to 4.8 Watts:

SM+24V+V
Vout
Max 0.2A

Digital OutGND

0V

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3.3. High-side Input switching equipment example.
When a digital output port of the SiteManager is connected to equipmentthat has “high-side switching” conductor connections on the input, you must
apply additional circuitry to pull the output towards +.
Be careful about just applying a resistor to pull the output high, as the effectand resistor value must be calculated based on the power consumption andswitching voltage level of the attached equipment.
A safer setup will be to use a Relay.
The following example uses a 5V relay, which means you can use the Voutof the SiteManager to pull the output high.

SM+24V(24V high-side switching)

24V+VVout
5V relay
Digital OutInput0VGND0V

In the following example a 24V relay is used, which means an externalsource must keep the level high.
SM+24V(24V high-side switching)

24V+VVout
24V relay
Digtial Out

GND

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Input

0V

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4.

Relay Output Port (isolated)
NOTE: This section applies to:
Output port 1 for Models 11xx and 33xx only

4.1. Relay output ports - Electrical information
The Relay Output1 is a “dual pin” port where both pins are isolated when
OFF and short-circuited when ON.
Maximum sink current is 0.5 A. Maximum Voltage is 24V.

4.2. Low-side Input switching equipment example
SM 11xx/33xx+V(Low-side switching)+V
Out1bInput

0V

Out1a0V

4.3. High-side Input switching equipment example
SM 11xx/33xx

+V

Out1b

(High-side switching)+V
Max 24V
Input

Out1a0V0V

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By default Output 1 is configured to go ON when Output port 1 is by default
configured to go active when e.g. a LinkManager is connected, and can beused to turn on a signal that notifies the users that the device is being serviced. The signal could be a LED light tower up to 12 Watts.
SM 11xx/33xx
+24V

Out1b

Max 24V, 0.5A

Out1a0V

5.

Output ports default functionality
Output port 1 is by default set to go active when connecting to theSiteManager or its Agents, using LinkManager, LinkManager Mobile or the“Go To Device” buttons from GateManager. The purpose is to signal, e.g. byturning on an external warning light, to the local service people that the machine is currently being serviced remotely.
Output port 2 is by default set to NO predefined action, but it can be configured to the same values as Output 1. I.e. if you want to use a digital Output
port 2 on a SiteManager 11xx or 33xx model to signal remote service, anduse the isolated Output ports 1a/1b for other purposes, you can change thisunder GateManager > General > [More>>].

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When an Output port function is selected for an Output port under
GateManager Settings, the active state will be displayed as follows under
System > I/O.

5.1. Manual toggling of Output port state
Both Output ports can be manually set ON or OFF via the toggle button in
the SiteManager web GUI under System > I/O.
Note that an Output that is triggered ON by a value defined under
GateManager Settings as mentioned above cannot be forced OFF.

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Notices
Publication and Copyright© Copyright Secomea A/S 2011-2015. All rights reserved. You may download and print a copy for your own use. As a high-level administrator, you
may use whatever you like from contents of this document to create yourown instructions for deploying our products. Otherwise, no part of this document may be copied or reproduced in any way, without the written consent ofSecomea A/S. We would appreciate getting a copy of the material you produce in order to make our own material better and – if you give us permission – to inspire other users.

Trademarks
GateManager™, SiteManager™ and LinkManager™ are trademarks of
Secomea A/S. Other trademarks are the property of their respective owners.

Disclaimer
Secomea A/S reserves the right to make changes to this publication and to
the products described herein without notice. The publication of this document does not represent a commitment on the part of Secomea A/S. Considerable effort has been made to ensure that this publication is free of
inaccuracies and omissions but we cannot guarantee that there are none.
The following paragraph does not apply to any country or state where suchprovisions are inconsistent with local law:
SECOMEA A/S PROVIDES THIS PUBLICATION "AS IS" WITHOUTWARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING,BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSESECOMEA A/S SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT,INCIDENTAL, CONSEQUENTIAL, OR OTHER DAMAGE ALLEGED INCONNECTION WITH THE FURNISHING OR USE OF THIS INFORMATION.

Secomea A/SDenmarkCVR No. DK 31 36 60 38Tel.: +45 88 70 86 50
Fax: +45 88 70 80 60
E-mail: sales@secomea.com
www.secomea.com

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