Thanks for the video link. I had forgotten that their were videos to help.
I have figured out a way to make it work. On the click PLC it has inputs labeled X1, X2, ETC..., these inputs are the order that the Modbus is reading them in Mach3. In the TCP Setup, I check the Cfg to enable it, then
I give it the modbus address of "0" for input "X1", "1" for in put "X2" , ETC. It didn't seem to matter at all how I had the PLC set up as long as it was set for an input to send a modbus command. In the brain I just used
the TCP modbus check box and Cfg# and it works. Probably not the best way to use Modbus, but it seems to be working for me thus far.
Now on to more testing. Going to figure out outputs. Thanks again Russ for the links, they were informative!
-Chad