ICP DAS USA GRP-520 User Manual page 68

(18) Execute "RTU_CS_Demo.exe".

Press "Get Information" to get all stations information.
 Set "Station ID" as 1 (because we set Station ID as 1 in GRP-520)
 Press "(2)ReadData" button to read Local IO data. Because GRP-520 don't have local
IO, we get the error code here
 Set "Modbus ID" as 1 and "Modbus Name" as "ET-7050", and press "(3)ReadData" to
get all IO data.
 Press "Write Dos (add 1)" button to control DO.
GRP-520 User Manual, V1.30, Aug. 2015
68