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Interface
2-59 CL-S6621
2-4. Interface
2-4-1. Serial Interface
(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 25PIN 225AE25FSNBBA3(COXOC)
(2) Signal line and pin assignment
Pin No. Signal
Abbr.
Signal name Function
1 FG Protective 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 Transmission request Signal line that becomes active when the
printer can receive data
5 CTS Able to transfer data Signal line that becomes active when other
devices 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 NC ------ Not used
14 VCC +3.3V (Factory use only )
15-19 NC ------ Not used
20 DTR Data Terminal
Ready
Signal line that is active when the printer can
interface with the host
21-25 NC ------ Not used