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4.4 Communication Wiring
CAUTION
Precautions for the communication wiring
・See that no noise is mixed in communication wiring. For communication wiring, it is recommended to
use a shielding wire effective for noise.
・When it is likely to be affected by induction noise, particularly when wiring near the high-frequency power
source, it is recommended to use a shielded twisted wire.
・Attach a round press-fitting terminal with insulated sleeve (for M3.5) to the end of the electric wire.
・Ground the shield of a connecting wire.
4.4.1 RS-232C Wiring
図 4.10 に従い、ＲＳ－２３２Ｃを配線します。
1-
1+
1
B
A
B
Fig.4.10 RS-232C Wiring
4.4.2 RS-485 Wiring
Wire RS-485 refer to Fig.4.11.
Fig. 4.11 RS-485 Wiring
1A
1C
2A
2C
2+
2-
2
B
B
A
1A 1C
2A 2C
3A 3C
+
-
DI
DI
DI
DI
COM
3
2
1
TD
RD
SG
Host computer
L
N
3A 3C
+
-
Ｒｔ
.........
TRM-10C
―24―
［Note］
Cable length is a maximum of 15m.
SG
RD
TD
［Note］
①Be sure to attach terminating resistance
(Rt 200Ω) to a host computer side.
②Connection is a maximum of 32 sets
including a host computer.
③Cable length is a maximum of 1.2 km.
④Use the UL20620-SB(M) cable made
by HITACHI CABLE LTD. or equivalent.
Host computer
Ｒｔ
TRM-10C
HXPRM10mnCT002E
－
＋
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