Table of Contents
Advertisement
3.2
Wiring
RS-485 interface
• 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 conver ter
(USB)
• SG does not have to be connected, but it can be used as an effective countermeasure against communication errors
due to noise.
4
Terminating resistance
100 (1/2W)
+
Shielded twist pair cable
–
SG
Terminating resistance
100 (1/2W)
Slave
+
RT x D
–
RT x D
Analyzer
+
–
Analyzer
+
–
Analyzer
INZ-TN5A1190-E
Advertisement
Table of Contents
