㵪
22
㵪
4.4 Communication Wiring
4.4.1 RS-232C
Wiring
࿑
4.10
䈮ᓥ䈇䇮䌒䌓䋭䋲䋳䋲䌃䉕㈩✢䈚䉁䈜䇯
㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷
Fig.4.10
㩷
RS-232C Wiring
4.4.2 RS-485
Wiring
Wire RS-485 referring to Fig.4.11.
㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷 㩷
Fig. 4.11
㩷
RS-485 Wiring
㩷
CAUTION
㩷
Precautions for the communication wiring
䊶
See to it that no noise is mixed in communication wiring. For communication wiring, it is recommended a
shielding wire effective for noise be used.
䊶
When it is likely to be affected by induction noise, particularly when wiring near the high-frequency power
source, it is recommended a shielded twisted wire be used.
䊶
Attach a round press-fitting terminal with insulated sleeve (for M3.5) to the end of the electric wire.
䊶
Be sure to ground the shield of a connecting wire.
䌛
Note
䌝
Cable length is a maximum of 15m.
䌛
Note
䌝
㽲
Be sure to attach terminating resistance
(Rt 200
㱅
) to a host computer side.
㽳
Connection is a maximum of 32 sets
including a host computer.
㽴
Cable length is a maximum of 1.2 km.
㽵
Use the UL20620-SB(M) cable made
by HITACHI CABLE LTD. or equivalent.
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4&
6&
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%1/
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SG
RD
TD
Host computer
.
0
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䋭
䋫
Host computer
䌒䌴
HR-701
㵺㵺㵺
HR-701
䌒䌴
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Tel: (01943) 602001 Fax: (01943) 816796