Hi all,

I am trying to read data from Siemens PLC (ET200sp CPU 1510SP-1 PN) using IOT2050.

1.node-red-contrib-s7 v3.0.0.

2.node-red-contrib-opcua v0.2.100

The communication works well for only a few minutes in both cases.

An error occurs:

"Error: Request timeout",

and after that:

"Error: connect ENETUNREACH 192.168.100.201:102 - Local (0.0.0.0:0)"

for s7 endpoint configured for PLC:

IncreasingTimeout for s7 endpoint hasn't changed anything.

The error:

"Client node error on: error: ["error at active reading: Session has been closed and should not be used to perform a transaction annymore"]"

appears later for OPC node.

Then the communication with the server in browser is lost. It works again after rebooting IOT2050.

Could You please give me some advice?

Thanks,

Hi,

I've attached a log file.

I hope there are some useful information there.

Hi,

yes, I am using X1P2 (eno2) as interface for connecting the PLC.

Hi,

thanks for Your advice. It has helped.

Best regards!