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DT4220 E
Wiring plan
20180619-V0
5.9. Connecting the RS-485 MODBUS communication output
(option)
The following figure shows the wiring plan:
1. Pull out the terminal so you can make connection easier.
2. Loosen terminal screws.
3. Insert the wire ends into the open terminals according to the wiring
plan.
4. Screw the terminal in.
5. Check the hold of the wires in terminals by pulling on
them firmly.
6. Push in the terminal.
The RS-485 MODBUS communication output should be used for long
distance communication. 32 instruments can be connected to the PLC
or to the computer.
You can find useful information about the MODBUS communication at
www.modbus.org.
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