Configuration example for UAC-02RS2

[Michael Hickey]

I purchased a UAC-02RS2 so I could connect a radio and need to configure the com port for Modbus slave.

 

Is there an example?

 

Radio does not use RS285 or Ethernet and I would prefer not having to purchase a converter to convert to RS485 thus the additional com ports.

[s.pratt]

Hello Michael,

 

Thank you for using our Forum.

 

In order to use Modbus via the UAC-02RS2 communication module, you would need to manually create the communication via the COM Rx and COM Tx function blocks in the Serial tab. 

 

We do have an RS232/RS485 converter that can be implemented with the CPU RS485 connection, which will allow you to use our Modbus communication function blocks. (Part #M90-19-R4).

 

What is the radio you are trying to use with this PLC?

[Michael Hickey]

The Radio is an old one that used to have a working RS485 port but it was damaged a few years ago.

 

The Radio is obsolete and the community is reluctant to change out the existing radio without changing them all which results in a large cost.  i.e. This is a patch until they can free up some funding.

 

I have several converters and gateways in my office but had hoped to use the comport card.

 

I will use one of those until someone with more experience and smarts than me creates a user block (and shares) for Modbus communication for the expansion com port.

 

thank you for the quick reply.