Interface; Serial Interface; Specifications; Signal Line And Pin Assignment - Citizen CL-S6621 Technical Manual

2-4.

Interface

2-4-1. Serial Interface

(1) Specifications

System
Signal level
Baud rate
Data length
Stop bit
Parity
Connector

(2) Signal line and pin assignment

Pin No. Signal
Abbr.
1 FG
2 TXD
3 RXD
4 RTS
5 CTS
6 DSR
7 SGND
8-13 NC
14 VCC
15-19 NC
20 DTR
21-25 NC
Start/stop asynchronous full duplex communication
RS-232C
2400, 4800, 9600, 19200, 38400, 57600, 115200 bps
7 bits, 8 bits
1 bit, 2 bits
Odd, even, none
D-SUB 25PIN 225AE25FSNBBA3(COXOC)
Signal name
Protective ground
Transmit Data
Receive data
Transmission request
Able to transfer data
Data Set Ready
Signal ground
------
+3.3V
------
Data Terminal
Ready
------
Protective grounding
Signal line that transmits data from the printer
to the host
Signal line that transmits data from the host to
the printer
Signal line that becomes active when the
printer can receive data
Signal line that becomes active when other
devices can receive data from the printer
Signal line that is active when the host can
interface with the printer
Signal grounding line
Not used
(Factory use only )
Not used
Signal line that is active when the printer can
interface with the host
Not used
2-59
Function
Interface
CL-S6621