ECONNREFUSED error with siemens s7 node

General
1

Trying to connect to a siemens PLC to pull sensor data into node red. I've done this successfully in the past but I'm now getting this error. I've double checked port and rack/slot info and they match working nodes we're using to connect to other PLCs. Does anyone have any experience with this error and what it might point to?

2

As you havent stated the exact node or your PLC model - we can only guess.

my guess...

Did you follow the instructions in the readme...

  • "Optimized block access" must be disabled for the DBs we want to access (image)
  • In the "Protection" section of the CPU Properties, enable the "Permit access with PUT/GET" checkbox (image)
3

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