if the integer in the plc is always 1 then wonderware reads the 1 and holds that value. wonderware isnt going to change it to zero unless it sees zero in the plc.
why dont you use the comm status functions that are built int the driver. update interval and comm status should be useful. you can also look at error counts if you want.
Hmm, but the wonderware script successfully sets it to a zero every time it reads from the PLC. I'm watching the integer change on the screen.
Well anyway, how do I access the comm status values of the driver as tags in wonderware?