richardplester
Member
I've added a few new Base Screens to an existing project on a Proface LT3300.
On random occasion (including power up) an incorrect Base Screen is displayed.
I've configure the initial Base Screen as "1", though on random occasions this screen isn't shown, rather one of the new Base Screens is displayed.
On other random occasions one of the new base screens is displayed and I can't switch to other screens.
I've used "Screen Switch" buttons and 99% of the time everything works fine, but once things have gone wrong I have to download to the HMI to get back to things working correctly again. (Power cycling does not fix).
I've had this problem manifest on actual HMI and Simulator.
I suspect the PLC is writing to a screen change request register, but believe I have this feature disabled in the system settings. There is no code that (intentionally) requests a screen change from the PLC - just operator driven switch screen buttons.
Any suggestions on how to debug gratefully appreciated.
On random occasion (including power up) an incorrect Base Screen is displayed.
I've configure the initial Base Screen as "1", though on random occasions this screen isn't shown, rather one of the new Base Screens is displayed.
On other random occasions one of the new base screens is displayed and I can't switch to other screens.
I've used "Screen Switch" buttons and 99% of the time everything works fine, but once things have gone wrong I have to download to the HMI to get back to things working correctly again. (Power cycling does not fix).
I've had this problem manifest on actual HMI and Simulator.
I suspect the PLC is writing to a screen change request register, but believe I have this feature disabled in the system settings. There is no code that (intentionally) requests a screen change from the PLC - just operator driven switch screen buttons.
Any suggestions on how to debug gratefully appreciated.