Vinicator Posted August 5, 2015 Report Share Posted August 5, 2015 When testing my program using the online test, there are a number of reset and set coils that do not energise even though the preceding conditions are met. Does anyone know where I may gone wrong Quote Link to comment Share on other sites More sharing options...
MVP 2022 Flex727 Posted August 5, 2015 MVP 2022 Report Share Posted August 5, 2015 Here is a list of things to check: 1) If the coil is in a subroutine, make sure the subroutine is active (look for where it is actually called and make sure it is actually being called) 2) Make sure there isn't a Direct coil with that same address elsewhere in the program (use find operand to create a list) 3) Make sure the Reset coil(s) are not activated Quote Link to comment Share on other sites More sharing options...
cantcliff Posted August 5, 2015 Report Share Posted August 5, 2015 Back track your logic from the coil you want to set. Look at the preceding statement, does it have a rung that sets it's status. Work backward from there to check the logic. Also, if you're working online while doing this. Make sure the PLC has the current program you're reading from loaded. The software and PLC do allow you to have different programs active and viewed in visilogic but the operands all update as if there is no difference. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.