ControlSystems
Lifetime Supporting Member
Hey Programmers,
Heres todays puzzle I was trying to solve... I have a Modbus TCP network with two Modicon M221 controllers live on my work bench. They each have a Read Var function block that is getting a value from the other controller okay. The Modbus Mapping is unchecked as I was hopeing to read and write directly to the %MW addresses rather than mess with mapping. However the Write Var is not working... In the Ethernet Port config, the Modbus Server option is selected... Any ideas what I may be missing here???
Heres todays puzzle I was trying to solve... I have a Modbus TCP network with two Modicon M221 controllers live on my work bench. They each have a Read Var function block that is getting a value from the other controller okay. The Modbus Mapping is unchecked as I was hopeing to read and write directly to the %MW addresses rather than mess with mapping. However the Write Var is not working... In the Ethernet Port config, the Modbus Server option is selected... Any ideas what I may be missing here???
