Can not connect to S7-1200 PLC

[volkanalkilic]

Hi, I can not connect to the S7-1200 PLC. However, I can connect to the same PLC using this library: https://github.com/killnine/s7netplus

What causes this problem?

[Lichtjaeger]

Can you post your configuration? For S7 1x00 it should look like:

const plc = new (require('nodes7'))({ silent: true })
plc.initiateConnection({
  host: '<IP of the plc>',
  port: 102,
  slot: 1,
  rack: 0
}, err => {
  // ...
})

Can you ping the plc?

[volkanalkilic]

Yes, i can ping the plc.

var nodes7 = require("nodes7"); var conn = new nodes7;

conn.initiateConnection({ port: 102, host: '192.168.1.150', rack: 0, slot: 1 }, function (err) {

});

[Lichtjaeger]

Hmm..., should work.

Can you copy the console output? Is there an error?

[volkanalkilic]

I do not have access to PLC at this point, but as far as I can remember console output is "internal server error".

[Lichtjaeger]

The console output of nodeS7 looks like:

[919,883304001] Initiate Called - Connecting to PLC with address and parameters:
[919,884208285] { port: 102, host: '192.168.1.150', rack: 0, slot: 1 }
[919,886065128] Connection cleanup is happening
[919,900610458 10.2.202.145 S2] Attempting to connect to host...
[919,908272737 10.2.202.145 S2] TCP Connection Established to 192.168.1.150 on port 102
[919,908350279 10.2.202.145 S2] Will attempt ISO-on-TCP connection
[919,913547538 10.2.202.145 S2] ISO-on-TCP Connection Confirm Packet Received
[919,918113432 10.2.202.145 S2] Received PDU Response - Proceeding with PDU 240 and 2 max parallel connections.

(If you don't pass silent: true) If you get an error before this lines, your program is crashing before even reach your conn.initiateConnection line.

[plcpeople]

Any updates on an actual connection error?

[plcpeople]

Closing due to lack of activity. Please re-open if you are still having difficulty and can post some console output or other information that might help resolve the issue.