Wiring - Fuji Electric PXG-9 Communication Instruction Manual

Wiring

■ RS-485
Please use a shielded twist pair cable. (Recommended cable: KPEV-SB (made by The Furukawa Electric Co., Ltd.))
•
The maximum cable length should be 500m. One master and up to thirty-one micro controllers (slaves) can be connected per
•
circuit.
Terminate both ends of the circuit with a terminating resistance of 100Ω (1/2W or more).
•
Ground the shielded cable once towards the master side.
•
Master
RS-485 interface
or
RS-485 side of
RS-232C to RS-485 converter
SG does not have to be connected, but it can be used as an effective countermeasure against communication errors due to
•
noise.
Terminating resistance
100W (1/2W)
+
Shielded twist pair cable
–
SG
Terminating resistance
100W (1/2W)
– 11 –
Slave
+
–
PXG Series
+
–
PXG Series
+
–
PXG Series
Chapter
3