Yamatake Azbil CMQ-V Series - Connection with CMC10 L

APPENDIX
■ Connection with CMC10L
The CMC10L001A000 is available as an RS-232C/RS-485 (3-wire system) con-
verter from Yamatake's. The following diagram shows an example of wiring using
a straight cable for a host computer in the terminal mode:
• Connect terminating resistors of 150Ω±5%, 1/2W min. at each end of the trans-
mission line.
• Terminal block is required for the CMQ-V series because of the connector type
connection.
• The cable to the terminal block from the CMQ-V series must be as short as pos-
sible.
• The FG grounding must not be made at the both shielded wire ends but only at
one location.
Handling Precautions
Be sure to connect SG terminals each other. Failure to do so might cause
unstable communications.
FG
FG
CMQ-V Series
(slave station)
CMQ-V Series
(slave station)
CMQ-V Series
(slave station)
CMQ-V Series
(slave station)
Terminating
resistor
Terminating
resistor
Shielded cable
Shielded cable
Terminal
block
Terminal
block
DA
DB
SG
*
*
DA
DB
SG
7
8
9
7
8
9
DA
*
*
DB
SG
DA
DB
SG
7
8
9
7
8
9
SG
RD
SD
RS
CS
DR
SG
Host computer CMC10L
ER
MOD.
TER.
TER.
22
3
77
88
6
6
55
4
4
3
DA
DB
11
CD
MOD.
*
: The pin No. 6 can be used as SG.
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