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App
Index
2-7
IM WT3001E-17EN
RS-232 Interface (Option)
RS-232 Standard Signals and Their JIS and CCITT Abbreviations
Pin No.
(9-pin connector)
Abbreviation
Serial (RS-232)
Description
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
Transmitted data
Request to send
Received data
Clear to send
Signal Wiring Example
The pin numbers are for the 9-pin connector.
In general, use a cross cable.
SD
RD
RS
CS
SG
SD
RD
RS
SG
• OFF-OFF / XON-XON
PC
This instrument
SD
RD
RS
CS
SG
SD
RD
RS
SG
• XON-RTS(XON-RS)
PC
This instrument
SD
RD
RS
CS
SG
SD
RD
RS
SG
• CTS-RTS(CS-RS)
PC
This instrument
CS
CS
CS
2
3
8
7
5
2
3
8
7
5
2
3
8
7
5
2
3
8
7
5
2
3
8
7
5
2
3
8
7
5
2.5 Connection via the RS-232 Interface