Steve Bailey
Lifetime Supporting Member + Moderator
I'm in the process of upgrading a 1998 vintage Modicon 984 system. The existing program contains a PID function block. The only PID instructions I can find in the ProWorx help files are the PCFL PID and the PID2.
The documentation for the PID2 function says that the Source block takes 21 consecutive 4xxxx addresses and the destination block takes 9 consecutive addresses. The PID function in the existing system has 41100 as the address for the source block and 41116 for the destination block which implies to me that the source block is using 16 consecutive addresses.
Can anyone point me to where I can find a description of the difference between the PID function and the PID2 function?
The documentation for the PID2 function says that the Source block takes 21 consecutive 4xxxx addresses and the destination block takes 9 consecutive addresses. The PID function in the existing system has 41100 as the address for the source block and 41116 for the destination block which implies to me that the source block is using 16 consecutive addresses.
Can anyone point me to where I can find a description of the difference between the PID function and the PID2 function?