CHAPTER 3
ND-45895 (E)
Page 30
Revision 1.0
INSTALLATION
Table 3-2 RS-232C Connector Layout
PIN
NO.
SIGNAL-NAME
SIGNAL
DIRECTION
MEANING
RS-232C
JIS
C6361
CCITT
V.24
ANOTHER
1
AA
(FG)
101
GND
Frame Ground
2
BA
SD
103
TXD
DTE
→
Send Data
3
BB
RD
104
RXD
←
DCE
Receive Data
4
CA
RS
105
RTS
DTE
→
Request to Send
5
CB
CS
106
CTS
←
DCE
Clear to Send
6
CC
DR
107
DSR
←
DCE
Data Set Ready
7
AB
SG
102
GND
Signal Ground
8
CF
CD
109
DCD
←
DCE
Data Channel Receive Carrier Detect
9
Not Used
10
Not Used
11
PB
Peripheral Busy
12
SCF
BCD
122
←
DCE
Backward Channel Receive Carrier Detect
13
SCB
BCS
121
←
DCE
Backward Channel Send (OK)
14
SBA
BSD
118
DTE
→
Backward Channel Send Data
15
DB
ST2
114
TXC (2)
←
DCE
Send Signal Element Timing
16
SBB
BRD
119
←
DCE
Backward Channel Receive Data
17
DD
RT
115
RXC
←
DCE
Receive Signal Element Timing
18
Not Used
19
SCA
BRS
120
DTE
→
Backward Channel Send Detect
20
CD
ER
108/2
DTR
DTE
→
Data Terminal Ready
21
CG
SQD
110
←
DCE
Data Signal Quality Detect
22
CE
CI
125
RI
←
DCE
Call Indication
23
CI, CH
SRS
112, 111
←
–
→
Data Signal Speed Choice
24
DA
ST1
113
TXC (1)
←
DCE
Send Signal Element Timing
25
Not Used
