Posted 20 Aug 2021 Hi, I have inserted new RTD module into in my SLC500 as replacement to defected RTD module however the module LED is enabled but the channel LED's are blinking. I have checked the following: In the advanced I/O configuration the module configuration is shown as expected In the data file word format it is not corresponding to the channel preferences What should I do and how to fix the word bits? Share this post Link to post Share on other sites
Posted 20 Aug 2021 Your screenshots are from when you're offline with the PLC. You won't see the input table change unless you're online. For your pattern of LEDs (module status is ON while channel statuses are blinking), the troubleshooting section of the user manual (1746-UM008B) has 3 suggestions: 1) Broken input condition (open or short circuit) 2) Out-of-range condition 3) Channel configuration error If you get online, check the processor status file register S:6 to identify the I/O error code and use the instruction set reference manual (1747-RM01) to look them up. That may help you narrow it down. Share this post Link to post Share on other sites
Posted 20 Aug 2021 (edited) Also in the screenshot you show the "Channel Enabled" box is not checked. Edited 20 Aug 2021 by Mickey Share this post Link to post Share on other sites
Posted 20 Aug 2021 9 hours ago, Joe E. said: Your screenshots are from when you're offline with the PLC. You won't see the input table change unless you're online. For your pattern of LEDs (module status is ON while channel statuses are blinking), the troubleshooting section of the user manual (1746-UM008B) has 3 suggestions: 1) Broken input condition (open or short circuit) 2) Out-of-range condition 3) Channel configuration error If you get online, check the processor status file register S:6 to identify the I/O error code and use the instruction set reference manual (1747-RM01) to look them up. That may help you narrow it down. I am sure it is something that has to be done with channel configuration because when I swap this module with the next module everything becomes OK therefore nothing wrong with the field side Share this post Link to post Share on other sites
Posted 20 Aug 2021 Post the .RSS file and someone can take a look. The file you loaded in the PLC. Save it while it's running and post that. Share this post Link to post Share on other sites