Citizen Systems CLP-8301 Interfaces, Serial interface, Specifications, XON/XOFF protocol

Chapter 9 Specifications

9.2 Interfaces

1 Serial interface

Specifications
Transfer method:	Start stop synchronous dual communication system
Signal level:	RS-232C
Baud rate:	2400, 4800, 9600, 14400, 19200, 38400, 57600, 115200 bps
Data bits:	7 or 8
Start bits:	1
Stop bits:	1 or 2
Parity:	Even, odd, or none
Connector:	D-SUB 25PIN 17LE-13250-27(D41)(DDK) or its equivalent

XON/XOFF protocol

XON code output requirements:

·Communication is enabled after power is turned ON.

·Residual capacity of the buffer is 1K bytes or more after sending XOFF code.

·Paused state is cleared.

·XOFF code is output due to error and printer returns to normal conditions.

XOFF code output requirements:

·Printer is in error.

·Printer is in paused state.

·Receive buffer has less than 128 bytes available.

16KB

1K bytes

128 bytes

Receive Buffer

XON code output XOFF code output

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