C-2. Rs-232C Connector - Star Micronics TSP552 User Manual

C-2. RS-232C Connector

Signal
Pin No.
name
1 FG Frame ground
2 TXD
3 RXD Receive data
4 RTS Request to send
5 CTS Clear to send
6 DSR Data set ready
7 SG
8 –
9 –
10 –
11 –
12 –
*13 SG2 Ground for +24V
The signals marked with "*" should not be used to supply power if the AC adapter
is used. Doing so may result in damage to the power supply.
Note: Connector on printer side: DALC-J25PAF-23L8 (from Japan Avia-
tion Electronics Industry, Ltd.) or equivalent
Connector on cable: DA-25SF-N (from Japan Aviation Electronics
Industry, Ltd.) or equivalent
I/O
Function
direction
Send data OUT
IN
OUT
IN
IN
IN
13 12 11 10 9 8
25 24 23 22 21
<Viewed from Connector Surface>
Signal
Pin No.
name
*14 SG2 Ground for +24V
15 –
16 –
17 –
*18 +24V
mechanical section
*19 +24V
mechanical section
20 DTR Data terminal ready
21 –
22 –
23 –
24 –
25 INIT
7 6 5 4 3
20 19 18 17 16 15
– 100 –
I/O
Function
direction
IN
Drive power for
IN
Drive power for
IN
OUT
IN
2 1
14