This is here an article how to start up the Teltonika router, as how digital outputs can be switched.

What is needed?

• Teltonika Router RUT 956 (the successor of the RUT 955)

• QModMaster Software

• Lamp/LED

Preparation

• Do the open collector hardware setup - here an example with a relay instead of a LED

• https://wiki.teltonika-networks.com/view/RUT955_Relay_to_Open_Collector_Output

• 

Teltonika

Teltonika RUT-956 will act as a Modbus Client. The configuration is done in the web interface. The web address is 192.168.1.1.

Steps of the configuration Teltonika

• Login

• Select Services/Modbus in the menu

• Activate Modbus TCP client as shown in the following picture. Do not forget to save.

QModMaster

QModMaster will act as Modbus TCP Server.

Steps Configure QModMaster as Server.

Select Modbus TCP in the Options menu and enter the parameters of the Client (IP address and port).

• Writing and reading the data

  • The function code for reading is 0x06 → "Write Single Register (0x06)

  • The function code for writing is 0x06 → "Read Holding Registers (0x03)

• Register Address to address the open collector output to enter as Start Address.

  • The register address for the output (open collector output) is 202 (BOOL⇾ 0|1)

  • The register address for the relay output PIN is 203 (BOOL⇾ 0|1)

  • For writing, use the field number 3 as shown in the picture below and press Enter (don't forget!).

Example