• Not Answered

Using The Output Register for read & write (For Modbus TCP over ethernet) with PK controller.

Hi All,

We have a requirement from customer that they want to write & read on the same value..(For example lets say I have PID SP writing from from HMI to SP parameter in PID module, they want this parameter to be directly connected to the output register and overwrite it whenever they wanted.. (like cross reference).. We found that we are not able to write on this register directly because sometimes it goes to old value or sometimes doesn't take the value. Is there any workaround for this, like scan time change or baud rate change to allow writing and reading from same parameter conneceted to register ??