Communication failed with Siemen S7-1200

Smart_boy · Jun 16, 2016

I getting communication failed to PLC with SCADA software.
I have checked both side and the configuration seem like correct.
Below is the screen shot for my PLC connection test with TIA portal.

The connection is healthy for TIA portal but failed when communicate with SCADA software.
I really no idea what going wrong. Hope somebody can help.

Thanks and appreciate~!

BryanG · Jun 17, 2016

You need to double click the PLC, go to the passwords section and see if HMI access is allowed. You may also need to allow Put/Get access.

sigmadelta · Jun 17, 2016

Check the IP address of the computer with the SCADA software in Windows, and make sure your IP is on the same subnet as the S7-1200.

boneless · Jun 17, 2016

I second Bryan's comment! Very tricky setting, that was hiding just below my toolbar

.

Smart_boy · Jun 19, 2016

I have checked and allowed the Put/Get access. But I still getting communication with SCADA software.

Smart_boy · Jun 19, 2016

Yes. Checked. The IP is on the same subnet as the S7-1200

Smart_boy · Jun 20, 2016

I tried use modscan to communicate with the S7-1200 and it's work. I think there is something wrong on my setting at SCADA software.

loqz · Jun 30, 2016

Smart_boy said:
I tried use modscan to communicate with the S7-1200 and it's work. I think there is something wrong on my setting at SCADA software.

Can 'scan Modbus'?

I guess you are trying to connect your SCADA with Profinet IO communication protocol where that is common if you search for your SCADA - S7-1200 setup guide..

Please check the Modbus TCP setup guide of your SCADA software..

giim · Jun 30, 2016

PLC sizing

Any body has the PLC Processsor and AI / AO , DI / DO sizing tools.

Communication failed with Siemen S7-1200

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