matt42164 (Customer) asked a question.
communication between two PS-622 using Modbus read/write commands.
Here is the setup that i have tried with no luck. Any feedback would be greatly appreciated.
Here is a copy of the master programHere is the slave program
If I understand your description, you are trying to accomplish Modbus communications from 1 P2-622 to another? If so, the slave PLC doesn't use Modbus instructions. You go to the Tagname database and assign Modbus addresses to the Tags that you wish to read and write from. In the master PLC, you target those Modbus addresses. You may want to consider using the RX and WX instructions for Productivity Series to Productivity Series communications. This allows you to specify the tags directly and eliminates the need for Modbus mapping.