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"No response form PLC, restarting communication" Node-red S7

Created by: Gustavsson at: 10/2/2018 3:23 PM (7 Replies)

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10/2/2018 3:23 PM	Rate (0)
Gustavsson Member Joined: 9/27/2018 Last visit: 10/28/2019 Posts: 5 Rating: (1)	This is probably some easy fix problem for you guys with black belt in these issues, but for me, it has become an insurmountable problem... My setup is as follow: I have a network switch which connects to -PLC 1214C -IOT2040 (xp1LAN) -PC. I believe I have tried all thinkable things and here follows a summary: Unchecked “Optimized block access” in TIA Checked “permission to access with PUT/GET” in TIA Created variables in DB1 “see png” Optimized S7 in accordingly to descriptions in node-red (I have tried DB1,BOOL0 , DB1. Q0.0 etc. etc) My Ethernet ports are separated with different ip´s. Etc.etc. I’m running out of options here and hoping for some valuable push in the right direction. Thanks in advance! Attachment screenshots.pdf (115 Downloads)

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10/2/2018 3:24 PM	Rate (0)
Gustavsson Member Joined: 9/27/2018 Last visit: 10/28/2019 Posts: 5 Rating: (1)	Attachment Skärmklipp.PNG (193 Downloads)

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10/2/2018 3:41 PM	Rate (0)
bergmanu Platinum Expert Joined: 4/28/2015 Last visit: 1/17/2020 Posts: 1225 Rating: (199)	Hi, according to your screenshots: The variables you want to read out have to in node-red like that: DATA: DB1,X0.0 T1: DB1,X0.1 T2: DB1,X0.2 Out: DB1,X0.3 DATA2: DB1,INT2 Best regards!

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10/2/2018 3:50 PM	Rate (0)
Gustavsson Member Joined: 9/27/2018 Last visit: 10/28/2019 Posts: 5 Rating: (1)	Hi! Thanks for fast reply! I already tried those, and I tried them again (just to be certain). Now I get “No respons from PLC, restarting communication” and “Failure (Bad Values)”

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10/2/2018 4:03 PM	Rate (0)
bergmanu Platinum Expert Joined: 4/28/2015 Last visit: 1/17/2020 Posts: 1225 Rating: (199)	Can you post your node-red flow please? Best regards!

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10/2/2018 4:16 PM	Rate (0)
Gustavsson Member Joined: 9/27/2018 Last visit: 10/28/2019 Posts: 5 Rating: (1)	Thanks a million for taking yore time to help me! Attachment noderedflow.txt (119 Downloads)

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10/2/2018 4:38 PM	Rate (0)
bergmanu Platinum Expert Joined: 4/28/2015 Last visit: 1/17/2020 Posts: 1225 Rating: (199)	I can't find an error in your flow and it works for me.. Two suggestions: Is your PLC loaded with the actual TIA Portal project? Do you have an IP address conflict? For now I don't know what else can be the error. Best regards!

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10/2/2018 5:35 PM	Rate (1)
Gustavsson Member Joined: 9/27/2018 Last visit: 10/28/2019 Posts: 5 Rating: (1)	Hi! Found another thread on the interweb (Siemens support forum). I factory reset my PLC then I got it working. Thanks a million for your help. Hopefully I will soon be up and running with my project!

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This contribution was helpful to 1 thankful Users bergmanu

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