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Error connecting to PLC: Error - TCP connected, ISO didn't

2/24/2017 9:18 AM	Rate (0)
DBtel Posts: 1 Rating: (0)	hi ! When i usering IOT2000 connect to S7-1200,it's show "Error connecting to PLC: Error - TCP connected, ISO didn't".How can I solve this problem? thinks!
DBtel Posts: 1 Rating: (0)
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3/3/2017 10:31 AM	Rate (1)
bergmanu Platinum Member Joined: 4/28/2015 Last visit: 4/24/2025 Posts: 3345 Rating: (382)	Hi, did you follow this application example?
	Not working for IOT2050 support anymore from March 1st, 2024. I really enjoyed the time supporting you! :)
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3/30/2020 1:32 PM	Rate (1)
thkfighter Posts: 1 Rating: (1)	In my experiment, this error is caused by wrong slot number. In Node-RED, edit s7 endpoint node, change the rack number or the slot number according to TIA Portal's configuration. If you don't know the right rack number and slot number, you can try Rack 0 and Slot 1, Rack 0 and Slot 2...
thkfighter Posts: 1 Rating: (1)
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This contribution was helpful to 1 thankful Users bergmanu

3/31/2020 9:49 AM	Rate (0)
bergmanu Platinum Member Joined: 4/28/2015 Last visit: 4/24/2025 Posts: 3345 Rating: (382)	thkfighter In my experiment, this error is caused by wrong slot number. In Node-RED, edit s7 endpoint node, change the rack number or the slot number according to TIA Portal's configuration. If you don't know the right rack number and slot number, you can try Rack 0 and Slot 1, Rack 0 and Slot 2... Good point, thanks! For PLC 300/400 the default is Rack 0 / Slot 2 For PLC 1200/1500 the default is Rack 0 / Slot 1 Best regards!
	Not working for IOT2050 support anymore from March 1st, 2024. I really enjoyed the time supporting you! :)
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