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RS-232 Standard Signals and Their JIS and CCITT Abbreviations
Signal Wiring Example
• OFF-OFF / XON-XON
PC
SD
RD
RS
CS
SG
IM WT3001E-17EN
Pin No.
(9-pin connector)
Serial (RS-232)
5
AB (GND)
3
BA (TXD)
2
BB (RXD)
7
CA (RTS)
8
CB (CTS)
The pin numbers are for the 9-pin connector.
In general, use a cross cable.
• XON-RTS(XON-RS)
This instrument
3
3
SD
2
2
RD
7
7
RS
8
8
CS
5
5
SG
2.5 Connection via the RS-232 Interface
Abbreviation
JIS
CCITT
102
SG
Signal ground
103
SD
Transmitted data
104
RD
Received data
105
RS
Request to send
106
CS
Clear to send
PC
This instrument
SD
SD
3
3
RD
2
2
RD
RS
7
7
RS
CS
8
8
CS
SG
5
5
SG
Description
• CTS-RTS(CS-RS)
PC
This instrument
SD
SD
3
3
RD
2
2
RD
RS
7
7
RS
CS
8
8
CS
SG
5
5
SG
2-7
1
2
3
4
5
6
7
App
Index
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