santosh Posted August 22, 2018 Report Share Posted August 22, 2018 Problem: MB 200 is not getting on even when Rung input Condition is True. 1. Routine Has been called from Main Routine. 2. MB 200 not been used in Program any where as output coil. Quote Link to comment Share on other sites More sharing options...
MVP 2023 Flex727 Posted August 22, 2018 MVP 2023 Report Share Posted August 22, 2018 The most common reasons for failure of a coil to be activated are: in a subroutine that is not being called, or duplicated elsewhere in the program. You've apparently addressed those. Another possible cause is that the program you are using in VisiLogic is not identical to the program in the PLC. VisiLogic will not warn you of that problem. A troubleshooting technique I like to use is to place an MI Increment function just after the coil. Whether or not the MI increments will help lead you to the source of the problem. 1 Quote Link to comment Share on other sites More sharing options...
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