Citizen Systems iDP-3550 - Manual (Page 43)

10.2 Connector's Pin Configuration
Mode
No.
CBM STAR ECS/POS
1 FG
← ←
2 TXD
← ←
3 RXD
← ←
4 RTS
←
5
6
DSR
7 GND
← ←
8
9
10
11
PE (HI-LEVEL) RCH
12 FAULT
13 GND
14 FAULT
15 mTXD
16 mRXD
17
18
19
20
DTR
← ←
21
22
23
RESET
24
25
Cautions: 1. An RS-232C signal is based on the EIA RS-232C.
2. When the data is not being transferred, the received data should be always maintained as a
mark.