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In Omnicomm Configurator, on the “Settings” tab select the “Modbus” section from the list:

Omnicomm Configurator

Select the operation mode:

“Master” – terminal sends requests for the access to the registers from the external devices via Modbus protocol

“Listener” – terminal listens and receives the required data during the exchange via Modbus protocol

When is necessary to add parameters press the “Add” button. A window will open:

Omnicomm Configurator

In the remote configuration server, in the “RS ports configuration” section, select the terminal operation mode and, if necessary, add the parameters by clicking the “Parameters configuration” button.

Remote configuration server

“Name of parameter” – enter the name of the parameter. Maximum length: 16 symbols.

“Address” – address of the tracked device. Possible values: 1 to 247.

“Function” – – enter the function number Possible values: 01 – Read coils, 02 – Read discrete inputs, 03 – Read holding registers, 04 – Read input registers.

“Register” – enter the register value. Possible values: 0 to 65535.

“Number of registers”. Possible values: for functions 1, 2 – from 1 to 64; for functions 3, 4 – from 1 to 4. Default value – 1.

“Time out” – enter the waiting time for the response of the device. Default value – 50 ms. Possible values: from 50…12500 ms.

“Value type” – select the data type. Possible values: S16, U16, S32, U32, U64, float, double, bin.

“Byte order” – select the order of words and bytes. Possible values: direct order of words and bytes, reverse order of words and bytes, reverse order of bytes, reverse order of words. Default value - direct order of words and bytes.

Maximum parameter number – 36.