Interface; Pin Assignment; Connection With Host - Citizen CD-S500 Series User Manual

Chapter5 Appendixes

Interface

Serial (RS232C) interface

Pin assignment

PIN No. Signal Name Direction Function
FG
1
2 TXD
3 RXD
4 RTS
6 DSR
7 SG
20 DTR
25 INIT
Buffer Full Control
Reception buffer 40/4K
8/1536 bytes
XON
Overrun/Buffer size: 16/512 bytes
XOFF cancel size:
48
–
Frame ground
Output Data transmission
Input Data reception
Output Same as DTR (20pin)
Input Host reception enabled status HIGH-READY/LOW-NOT READY
[During DTR/RTS control]
The printer transmits data after it is confirmed that DSR is high.
(But transmission by DLE EOT, GS a)
[During XON/XOFF control]
Printer does not confirm DSR.
–
Signal ground
Output Printer READY/BUSY status HIGH-READY/LOW-BUSY
[During DTR/RTS control]
When the printer is in reception enabled status, it is READY, when it is
reception disabled, it is BUSY.
Printer status
1) BUSY until completion of initial settings when the power is turned on
2) BUSY in normal OFFLINE status
3) BUSY in OFFLINE status during PE
4) BUSY in OFFLINE status when other errors occur
5) BUSY when the reception buffer is full
6) BUSY during Self-Print
[During XON/XOFF control]
Always HIGH-READY except under the following conditions
1) Until completion of initial settings when the power is turned on
2) During Self-Print
Input Printer RESET (1ms or more is higher)
16/512 bytes
XOFF
8/1536 bytes

Connection with HOST

Printer D-Sub25P
Host D-Sub9P
1 FG
2 TxD
3 RxD
20 DTR
6 DSR
4 RTS
5 CTS
7 SG
25 RESET
1 DCD
3 TxD
2 RxD
4 DTR
6 DSR
7 RTS
8 CTS
5 GD
9 RI/RESET