[Vishnu]

Hello Marco.

Sorry for not responding in your native language. I have had a look at your problem and question your approach to your control system.

Is there a reason why the HMI needs to directly interface with the DTC1000 data? If you have it connected to the PLC, just have the PLC periodically poll the data you require into registers in the PLC. Then the HMI can read from the PLC as normal.

From my experience, having more than two types of devices on one RS485 chain is very tricky.

There are 3 communication ports on Delta PLC. You can use each independently from one another. I.E. have DTC1000 on COM2 and HMI on COM3 or COM1.

Thirdly I would recommend buying the extension modules if you are running low on COM ports with the Delta PLCs. They plug into the PLC and interface directly with it.

[Vishnu]

The software does not allow me to add more than one connection to a COM port.

[Vishnu]

This issue has been fixed. For those who have stumbled upon this same problem, pressing the reset pin and waiting ~2 minutes after programming the SVR-100 fixes the issue.

[Vishnu]

I should have mentioned that both projects are test projects, with only bool PLC variable. The online simulation does not help as it says its not connected to a PLC. This is also evident as the COM1 light does not flash on the DVPES2, like it does with the  MT6103ip. So there is probably no connection from the SVR-100 to the PLC. My concern is fixing this though.

I’ve tried this on 2 CMT-SVR-100s. One completely brand new, both with latest OS. This problem has completely stumped me. I might try get RS485 working with the 6103ip, then try it instead?

[Autore]

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