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Serial Connector (CN1)
9
CN1 is used for communicating between a PC and a ZM-
**
(RS-232C, RS-422/485).
Serial Connector (CN1)
The pin arrangement of serial connector is as follows:
Pin No.
1
2
3
7
9
10
12
13
14
17
Signal
FG
SD
RD
SG
+5V
0V
+SD
-SD
+RTS
-RTS
Contents
Frame ground
RS-232C send data
RS-232C receive data
Signal ground
RS-422 send data (+)
RS-422 send data (-)
RS-422 RTS send data (+)
RS-422 RTS send data (-)
4
5
6
8
11
15
16
20
21
22
23
RTS
CTS
RS-232C RTS request to send
RS-232C CTS clear to send
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
18
19
-CTS
+CTS
RS-422 CTS receive data (-)
RS-422 CTS receive data (+)
24
25
+RD
-RD
RS-422 receive data (+)
RS-422 receive data (-)
Communication cable of RS-232C/RS-422
RS-232C
In case of RS-232C, SD and SG, and RD and SG form a pair.
Connect the shielded cable to pin No. 1 or the connector case cover.
CN1(Dsub 25pin 凹)
1
14
13 25
CN2
MJ1MJ2
C
N1
100-
240VAC
L
N
NC
Signal
FG
Pin No.
SD
RD
RS
CS
1
2
3
4
5
Shielded cable
To the RS-232C port
of the PC link module
SG 7
Receive data
SG
SG
Send data
ZM-
**
(CN1)
1 Serial Connector (CN1)
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