Posted 4 Oct 2016 HI, there. I am new to the Honeywell PLC, usually dealing with AB or Omron. Need some help from the Honeywell PLC gurus, my the only one PLC IPC620-1536 , suddenly stop working. No "Run" light or any outputs are present. Turning the "Mode Key" to the "program mode" and back to the "run mode" doesn't make any difference. I attached couple photo. My question, is any other way to start PLC running again? If I purchase the Win.Loader and communication cable and connect to the PLC, can I change PLC back to "Run" mode and upload the program, or fail to change the Mode using the Key. means the same fail using the software? Please update. Thanks for advance, Share this post Link to post Share on other sites