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4-3
IM AQ6370C-17EN
Serial (RS-232) Interface
1
2
3
4
5
6
7
8
App
Index
List of RS-232 Standard Signals and JIS and CCITT Cable Addresses
Signal Chart
Pin Number
(9-Pin Connector)
Code
RS-232
Name
CCITT
JIS
5
3
2
8
7
AB (GND)
BA (TXD)
BB (RXD)
CB (CTS)
CA (RTS)
102
SG
103
104
106
105
SD
RD
CS
RS
Signal ground
Send data
Request to send
Receive data
Clear to send
Signal Wire Connection Example
Pin numbers are for 9-pin connectors.
In most cases, use a cross cable.
SD
RD
RS
CS
SG
SD
RD
RS
SG
• OFF-OFF/XON-XON
PC
AQ6370
SD
RD
RS
CS
SG
SD
RD
RS
SG
• Hard(CS-RS)
PC
AQ6370
CS
CS
2
3
8
7
5
2
3
8
7
5
2
3
8
7
5
2
3
8
7
5
4.1 Connecting via the Serial (RS-232C) Interface