JayKay Posted December 9, 2019 Report Share Posted December 9, 2019 Preset value for timer changes byself. A set value of 00: 45 on HMI It becomes zero occasionaly when machine is started after stopping either after production or during the production. It started happening from couple of weeks. Nothing been changed in the programming or wiring, any help would be appreciated. Quote Link to comment Share on other sites More sharing options...
MVP 2021 Joe Tauser Posted December 9, 2019 MVP 2021 Report Share Posted December 9, 2019 Start by checking the backup battery in the PLC. Joe T. Quote Link to comment Share on other sites More sharing options...
MVP 2021 Flex727 Posted December 10, 2019 MVP 2021 Report Share Posted December 10, 2019 I've seen power spikes or glitches change timer values. If you keep having the problem due to some electrical interference, you might try loading the timer preset into an ML and storing it back at the appropriate time. Quote Link to comment Share on other sites More sharing options...
JayKay Posted December 16, 2019 Author Report Share Posted December 16, 2019 Thanks Joe and Flex. I haven't, tries yet. 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.