
91
MODBUS
Communication
Protocol and
Parameters
Note: If the programming mode must be exited, press EXIT (F4)
repeatedly until the “Normal Mode” screen is displayed.
To program the communication parameters, press I/O (F1) key from the
base screen of the programming mode.
SET I/O
I/O FEQ 420 EXIT
F1 F2 F3 F4
Then press I/O (F1) again:
SET I/O
COM CTC EXIT
F1 F2 F3 F4
Then press COM (F1) to select communication parameters
Set Bus protocol:
Bus=Modbus
NXT
OK
F1 F2 F3 F4
Press NXT (F1) repeatedly until the correct selection is shown and then
press OK (F4) to accept the setting.
Selections are:
“Modbus”
“None”
Set Baud Rate communication parameter:
Baud=9600
NXT
OK
F1 F2 F3 F4