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plcpeople / nodeS7

Node.JS library for communication to Siemens S7 PLCs
MIT License
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ET-200s Communication Problem #17

Closed dedhdude closed 7 years ago

dedhdude commented 8 years ago

Hi,

When I try to communicate with my "Et200s" PLC it is connecting with desire IP & Port Correctly, but then after it is Disconnected showing " Error - TCP Connected , ISO didn't

connectionissue

plcpeople commented 8 years ago

Assuming it's an ET200S PLC and not an ET200SP PLC which would use slot 1...

How many other connections are being made to the PLC? Maybe it is being refused because there are too many connections made by other devices or reserved for other devices on the communication tab in the hardware configuration. Will it work if you power cycle it and nothing else is connected? Do other OPC servers/HMI packages work?

dedhdude commented 8 years ago

Its is connected with SCADA. And is working fine.

dedhdude commented 8 years ago

My hardware Configuration cpu hardware

plcpeople commented 8 years ago

What do you see if you look at the connection resources tab under CPU properties in TIA? I have this same CPU for testing and it works fine. If you have the web server enabled it will also give some information on what connections are in use. I can't think of any other reason why it would deny the ISO connection other than there are no free connections.

plcpeople commented 8 years ago

Did you have any luck with this? I re-tested latest version with my ET200S without issue.

dedhdude commented 7 years ago

Still I am Not able to connect with the plc. Please Provide me your email ID so i can send demo project. Or you can mail me your demo project to Email Id:- "dedhdude@gmail.com"

dedhdude commented 7 years ago

Did you checked the file which i had send u? And i had tried with s7-1200 plc and is working good.

plcpeople commented 7 years ago

This was solved via email so I am closing the issue.

mstfldmr commented 5 years ago

what was the problem?

plcpeople commented 5 years ago

I looked back through my email and it was not clear. A firmware update was the reported fix. But I've connected with older firmware no problem. If TCP connects but ISO doesn't, or other errors where a known address doesn't work, it's most likely that either all connections are reserved for other things (are you using TIA Portal or Step 7 - if TIA portal, check Device Configuration, Connection Resources and make sure the user-entered fields are all 0 or 1) or you're using a newer (1200/1500) PLC and haven't checked "Enable GET/PUT" in Device Configuration, Protection and Security, Connection Mechanisms, or you are trying to access an optimized data block.