YOKOGAWA WT310EH User Manual page 23

3.3 Connecting to the RS-232 Interface
RS-232 Standard Signals and Their JIS and CCITT Abbreviations
Pin No.
(9-pin connector) RS-232
5
3
2
7
8
Signal Wiring Example
The pin numbers are for the 9-pin connector.
In general, use a crossover cable.
OFF-OFF / XON-XON
PC
SD 3
2
RD
RS 7
CS 8
SG 5
Connection Procedure
Connect the cable as shown below.
3-4
Abbreviation
CCITT
AB (GND)
102
BA (TXD)
103
BB (RXD)
104
CB (CTS) 105
CA (RTS) 106
CTS-RTS (CS-RS)
WT PC
3 SD SD 3
2 RD 2
RD
7 RS RS 7
8 CS CS 8
5 SG SG 5
WT310E/WT310EH
Name
JIS
SG Signal ground
SD
Transmitted data
RD Received data
RS Request to send
CS
Clear to send
WT
3 SD
2 RD
7 RS
8 CS
5 SG
WT332E/WT333E
IM WT310E-17EN