Solution:

step 1: Use ADAM-4000 utility to configure ADAM module's communication protocol as "Modbus".And set its address as 3. step 2: Adjust Node ID of ADAM-5000/TCP as 1 and connect ADAM-4000 module to its COM2. step 3: Run ADAM-5000TCP/6000 utility and click this module icon. step 4: Switch to "Network" Page and remember its IP address.(For example 172.18.2.152) step 5: Switch to "RS-485/Modbus/COM-WDT" and change "Parity" setting as "None" and adjust "RTU Frame Timeout" as 100ms. step 6: Click "Apply" and input the password to make those setting active. step 7: Now you can use Modscan or Advantech MOBDUS/TPC OPC Server to verify it. step 8: Input the IP address(172.18.2.152), set Port as 502 and RS-485 address as 3. step 9: Run it and execute scaling setting to get its engineering value. Please also refer to the attached video tutorial for detail.