Lesson 5 - Configure your first HMI screen with a few basic objects

[@BLACK_HEARTY_96]

I have Siemens kp700 comfort HMI ,it's communicate with Siemens S7 300 plc via profibus MPI.
HMI shows 190011 code.
One button used HMI the tag was M40.4 it is automatically latched during running program. I change different bit also ,,but cannot rectify the issues,, that memory bit not used any other place in program.
The issues is which side PLC side or HMI side?

[@aminebensalem2666]

thank you