Hi

I have two PLC S7 1200.The monitoring software is WINCC.I want to add new three PLC S7 1200.The relationship created by s7 connection between PLCs together and WINCC.PLC’s connections between old PLCS together and between they with WINCC is good but new PLCs cann’t communicate with together and with WINCC by s7 connection.I think the new PLCs don’t permit to receive data from their.Please help me solve this problem.

New PLC’s Order numbers :

6ES7 214-1AG40-0XB0

Old PLC’s Order numbers :

6ES7 212-1AE31-0XB0

6ES7 214-1AG31-0XB0

With regards

Hi William B.

Thank you for your response.

I started the project with a PLC and add other PLC later.I was monitored PLCs by WINCC.The employer requests the new PLCs now.

The new PLC’s firmware version is 4.0.The PLC’s connections between PLCs together and between they with WINCC is S7 connection.

The OPC Server’s tags (OPC.SimaticNET,Kepware.KEPServerEX.V5) don’t receive data from new PLCs(connection quality is bad).The GET and PUT instructions don’t work(No send,No receive) in new PLC’s CPU.The PLC(V4.0) sends and receives data with WINCC V7.3 by SIMATIC S7-1200 Channel Driver.

I think PLC with firmware V4.0 has problem with OPC Servers and GET and PUT instructions or S7 connection because PLC with firmware V3.0 or lower didn’t have any problem.

project file

Best regards.

Hi ,

With the new versions there is a setting related to put/get and OPC connections .

You can find it under Properties / General/ Protection . Have a look at the attached screenshot. The S7-1500 Cpu have this settting to.

Koenb

I've had the same issue and i haven't noticed this setting..

So thank you, really useful information for me;)

New question published by William_B is split to a separate thread with the subject S71200 V3.0 communicating with OPC.

Best regards
Min_Moderator

Hello,

This information is also very useful for me, I fixed my problems with this.

gv_le mans