RUT955 Input/Output

The information in this page is updated in accordance with firmware version RUT9XX_R_00.06.09.5.

Summary

Inputs and Outputs are used for the monitoring and controlling of a connected device or receiving signals from that device in order to trigger certain events.

This chapter of the user manual provides an overview of the Input/Output page for RUT955 devices.

Characteristics

This section provides a list Input/Output electric characteristics inherent in RUT955 routers.

• Digital input (DIN1): Logic low 0 - 1.2 V; Logic high 1.8 - 3 V
• Digital galvanically isolated input (DIN2): 0 - 30 V
• Analog input (voltage mode): 0 – 24 V*
• Analog input (current mode): up to 20 mA (commonly used with 4-20 mA standard sensors)
• Digital open collector (OC) output: 30 V, 250 mA
• SPST relay output: 24 V, 4 A
• Digital non-isolated input (in power socket): Logic low 0 - 5 V; Logic high 8 - 40 V
• Digital open collector (in power socket) output: 30 V, 300 mA

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* The deviation from the actual input voltage and the voltage measured by the device is dependent on the input voltage value:

• ≥ 1.5 V - the deviation is about ± 10 % and gets lower when the input voltage increases towards 5 V
• ≥ 5 V - the deviation does not exceed ± 3 %
• ≥ 9 V - the deviation does not exceed ± 2 %

Additional note: the deviation values specified above are applicable in temperatures of < 50 °C. Under higher temperatures the deviation values become considerably higher.

Status

The Status tab displays the current states the router’s inputs and outputs:

Custom Labels

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If the default Input/Output labels do not suit your needs, you can always configure custom ones in the Custom Labels section. Click the 'Edit' button next to the desired Input or Output and you will be redirected to a window such as this:

The figure above is an example of custom label configuration for Digital Input. You can change an input's/output's name and the names of their states. The changes are purely cosmetic and used for easier management purposes.

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In addition to adding custom names, you can also define how the displayed value for Analog Input is calculated and displayed. The figure below represents what the configuration of custom labels for Analog Input looks like.

Status and control from command line

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You can control and monitor input and output values via a command line interface (CLI) with the gpio.sh command. You can execute this command without any additional options to get usage syntax examples:

root@Teltonika:~# gpio.sh
GPIO control aplication
        Usage: /sbin/gpio.sh <ACTION> <NAME>
        ACTION - set, clear, get, export, invert, dirout, dirin
        NAME - SIM      DOUT1   DOUT2   DIN1    DIN2    MON     MRST    SDCS    RS485_R

Where:

• DOUT1 - Digital OC output
• DOUT2 - Digital relay output
• DIN1 - Digital input
• DIN2 - Digital galvanically isolated input

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For example, to get the status of the digital OC output use the following command:

root@Teltonika:~# gpio.sh get DOUT1
0

The return value 0 means that the output is in Inactive (High level), i.e., OFF.

You can turn it ON (Active (Low level)) by setting its value to 1:

root@Teltonika:~# gpio.sh invert DOUT1
root@Teltonika:~# gpio.sh get DOUT1
1

As seen in the example above, you can change the value of an output by using the invert command, which simply turns the current value of the specified output into its opposite state.

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To get the value of the analog input use the cat /sys/class/hwmon/hwmon0/device/in0_input command. Router will show voltage value in mV. For example:

root@Teltonika:~# cat /sys/class/hwmon/hwmon0/device/in0_input
950

Input

The Input tab is used to configure the router's input pins.

Check Analog

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The Check Analog section is used to set how often the router checks the value of the analog input. This is relevant to input rules related to the analog input. For example, if you have configured an input rule that triggers a certain action when the analog input value is inside a certain range, the frequency at which the router will check this value is set in this section.

Input Rules

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The Input Rules section provides you with the possibility to set up rules that execute user specified actions after a certain trigger occurs. To add a new rule, look to the Input Configuration section that is just below. Select the input, the trigger and the action for the rule and click the 'Add' button. A new rule will appear in the Input Rules list:

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To begin editing an input rule, click the 'Edit' button located next to it. Refer to the figure and table below for information on input rule configuration.

Field	Value	Description
Enable	yes | no; default: yes	Turns the input rule on or off.
Input type	Digital | Digital isolated | Analog; default: Digital	Selects to which input pin the rule will apply.
Trigger	Input open | Input shorted | Both; default: Input open	Selects which input state will trigger the rule.
Action	Send SMS | Change SIM card | Send email | Change profile | Turn on WiFi | Turn off WiFi | Reboot | Activate output | HTTP POST/GET; default: Send SMS	The action that will be taken when the rule is triggered. Send SMS - sends an SMS message to a specified number(s) or user group. The message text is custom. Change SIM card - switches to using the SIM card that is currently not in use. Send email - sends an email to the specified address(es). You will be prompted to enter your email account's authentication information. Change profile - switches to using another configuration profile. Configuration profiles can be created via the System → Profiles page. Turn on WiFi/Turn off WiFi - turns WiFi on or off. Reboot - reboots the router when a specified amount of time passes or instantly after the trigger occurrence. Activate output - activates the specified router output. HTTP POST/GET - executes an HTTP POST or HTTP GET action.

Output

The Output tab is used to configure the router's output pins.

Output Configuration

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The Output Configuration section is used to change the default states of the router's output pins.

Field	Value	Description
Open collector output	Low level | High level; default: Low level	Changes the default* state of the open collector (OC) output pin.

* Changing the default state of an output means that the changes will be written into the input/output config and saved. This means that unless some other related change occurs the state of the output will remain as set in this section.

ON/OFF

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The ON/OFF section is used to turn the router's outputs on or off. This action does not save the state permanently, meaning that after a reboot the states will revert back to their default values.

Periodic control

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The Periodic control section allows you to set up automatic output control rules that trigger output state changes at the specified period or interval. Refer to the figure and table below for information on configuration fields contained in that section.

Field	Value	Description
Enable	yes | no; default: no	Turns the rule on or off.
Output	Digital OC Output| Digital 4PIN | Digital relay output; default: Digital OC Output	The output pin that will be effected by the rule.
Action	On | Off; default: On	The action that will be performed on the output.
Action timeout	yes | no; default: no	Action timeout specifies whether an action should end after some time. For example, if action is set to on and timeout is set to 10, when the trigger occurs the output will turn on for 10 seconds before turning off.
Mode	Fixed | Interval; default: Fixed	When the rule will be triggered. Fixed - triggers the specified action on a specified day(s), hour and minute. For example, every Sunday at 8:30 AM. Interval - performs the action at an interval. For example, every 1 hour during Mondays.

Scheduler

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With the help of the output Scheduler you can configure a timetable of when the outputs should be enabled or disabled based on time.

Post/Get

Enabling Post/Get will allow you to send HTTP POST/GET requests to the router that control the state of the output. The figure below is an example of the Post/Get configuration section and the table below provides information on the fields contained in that section:

Field	Value	Description
Enable	yes | no; default: no	Turns Post/Get on or off.
Username	string; default: none	Username used for authentication in POST/GET queries.
Password	string; default: none	Password used for authentication in POST/GET queries.

Post/Get examples

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It is possible to turn the outputs on and off by using a HTTP POST/GET requests. Use a web browser or any other compatible software to send HTTP POST/GET requests to the device.

Below is a table containing syntax examples of this usage:

Action	POST/GET URL
Turn relay output on	http://192.168.1.1/cgi-bin/output?username=user1&password=user1&action=on&pin=relay
Turn relay output on after a 10 second delay	http://192.168.1.1/cgi-bin/output?username=user1&password=user1&action=on&pin=relay&delay=10
Turn relay output on for 5 seconds	http://192.168.1.1/cgi-bin/output?username=user1&password=user1&action=on&pin=relay&time=5
Turn Relay output on for 5 seconds after a 15 second delay	http://192.168.1.1/cgi-bin/output?username=user1&password=user1&action=on&pin=relay&delay=15&time=5
Turn relay output off for 5 seconds after a 15 second delay	http://192.168.1.1/cgi-bin/output?username=user1&password=user1&action=off&pin=relay&delay=15&time=5
Turn open collector output on	http://192.168.1.1/cgi-bin/output?username=user1&password=user1&action=on&pin=oc
Turn open collector output off	http://192.168.1.1/cgi-bin/output?username=user1&password=user1&action=off&pin=oc
Turn Digital 4 PIN output on	http://192.168.1.1/cgi-bin/output?username=user1&password=user1&action=on&pin=4pin
Turn Digital 4 PIN output off	http://192.168.1.1/cgi-bin/output?username=user1&password=user1&action=off&pin=4pin

Overview:

• 192.168.1.1 - router's default LAN IP address; replace it in accordance with your own configuration.
• username - login name from Post/Get configuration.
• password- password from Post/Get configuration.
• action- the action that will be performed on the output (can be on or off).
• pin - specifies the output (use ocor relay).
• delay - defines a delay (in seconds) after which the specified action will be performed.
• time - defines a window of time during which the action will take place. For instance, if you post an on action while specifying time=5, the output will turn on and stay on for 5 seconds before turning off.

Delay and time parameters can be used together. For example, if delay is 10, time is 5, action is on, then 10 seconds after the execution of the command, the output will switch to on (or stay in on state if it was already that way), then after 5 more seconds it will switch to off state. In this case the overall command execution time is 15 seconds.

Additional Information

Input/Output hardware application examples:

• Relay to Open Collector Output
• Inverting Relay Output Polarity
• Inputs in Security Applications
• Current Measurement with Analog Input