Posted 3 Jan 2016 Hello, A power surge occurred in a plant and the ERR led on the CMP1 CPU30 is now ON. If you have noticed I have a post referred to as Communication failed for CMP1 CPU30. Now that I am waiting for a new communication cable to be shipped, I would like to know what remedy is possible for this issue. Best Regards, Share this post Link to post Share on other sites
Posted 3 Jan 2016 You will have to try and communicate with the PLC to find the error - it is quite possible that the PLC is dead - they are old and no longer supported. Share this post Link to post Share on other sites
Posted 3 Jan 2016 Hi Bob, How could know if the PLC is dead after communicating? Regards, Share this post Link to post Share on other sites
Posted 3 Jan 2016 If it is completely dead you will not be able to communicate with it. If you can communicate with it check the error tab and the error will be listed there. It could still be dead but may be OK. Share this post Link to post Share on other sites