AHMI doesn't have a prebuilt built DGV with comms. But, it sounds like you have done this before, just with a different PLC. The only difference should be when you write to the PLC. I've been wanting to create something like this for a while. I did one a while ago that simply iterated through all rows/columns and wrote the values to the PLC. However, this seems very wasteful. I wanted to do the write on cell dirty, but just never got back around to it.
James