topic Re: OPC DA output signal not received in FlexSim Forum

OPC DA output signal not received

mail7WJMZ — Wed, 27 Jul 2022 02:30:07 GMT

[ FlexSim 22.1.3 ]

Hello,

I have a setup that using OPC DA to connect PLC. It's fine to send input signal to PLC (sensor), but FlexSim doesn't receive output signal from PLC (control) even "Subscribe for Changes" checked.

I tried other tool to test signal transmission and IO are both okay.

Do I have wrong configuration? And how can I debug this?

Re: OPC DA output signal not received

Jeanette_Fullmer — Wed, 17 Aug 2022 17:23:18 GMT

@Joshua S,

Are you able to help with this question?

Re: OPC DA output signal not received

lcavallero — Wed, 24 Aug 2022 10:15:54 GMT

Hi Steven,

which OPC DA server are you using?

Could you share the emulation configuration are you using? May be that you are read a not-supported data type?

FlexSim OPC DA has been tested with standard product like KepServer OPC DA and work correctly with PLC Control Tag.

Re: OPC DA output signal not received

andrew_o2 — Mon, 29 Aug 2022 18:45:45 GMT

Hi @Steven Chen,

We haven't heard back from you. Were you able to solve your problem? If so, please add and accept an answer to let others know the solution. Or please respond to the previous comment so that we can continue to help you.

If we don't hear back in the next 3 business days, we'll assume you were able to solve your problem and we'll close this case in our tracker. You can always comment back at any time to reopen your question, or you can contact your local FlexSim distributor for phone or email help.

Re: OPC DA output signal not received

mail7WJMZ — Tue, 30 Aug 2022 02:17:18 GMT

Actually I use some kind of soft-PLC as OPC DA server, perhaps it's the reason why FlexSim can't receive signal from the soft-PLC. I will find some time to test connection on hardware PLC. Will update infomation here after test done.

Re: OPC DA output signal not received

lcavallero — Wed, 31 Aug 2022 12:23:17 GMT

There is no reason why a OPC DA client (like Flexsim connector is) doesn't work with a soft-PLC DA server if the OPC DA prococol is correctly implemented.

It is possible to know which soft-PLC are you using?