Citizen CL-E700 Series, Technical Manual

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Chapter 2 Operating Principles
2-4. Interface
2-67
CL-E700 series
2-4-3. Serial Interface (Option)
(1) Specifications
System Start/stop asynchronous full duplex communication
Signal level RS-232C
Baud rate 2400, 4800, 9600, 19200, 38400, 57600, 115200 bps
Data length 7 bits, 8 bits
Stop bit 1 bit, 2 bits
Parity Odd, even, none
Connector D-SUB 225AE25FGTBBA3 25-pin (COXOC)
(2) Signal line and pin assignment
Pin No. Signal
Abbr.
Signal name Function
1 FG Frame ground Protective grounding
2 TXD Transmit Data Signal line that transmits data from the printer to
the host
3 RXD Receive data Signal line that transmits data from the host to
the printer
4 RTS Request To Send Signal line that is active when the printer can
receive data from the host
5 CTS Clear To Send Signal line that is active when the host can
receive data from the printer
6 DSR Data Set Ready Signal line that is active when the host can
interface with the printer
7 SGND Signal ground Signal grounding line
8-13,
15-19
NC - Not used
14 VCC +5V (Factory use only )
20 DTR Data Terminal
Ready
Signal line that is active when the printer can
interface with the host
21-25 NC - Not used
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