Configuration; Rs-232 Serial Interface; Specifications; Switching Between On-Line And Off-Line - Citizen CMP-30 series Technical Manual

2. Configuration

2.1 RS-232 serial interface

2.1.1 Specifications

Data transmission: Serial
Synchronization:
Handshaking:
Signal levels:
Baud rage:
Data word length: 7 or 8 bits
Parity Settings:
Stop bits:
Connector (printer side):
☞ NOTE: The data word length, baud rate, and parity depend on the

2.1.2 Switching between on-line and off-line

The printer does not have an on-line/off-line switch.
The printer goes off-line:
•Between when the power is turned on (including reset using the interface)
•During the self-test.
•When the cover is open.
•During paper feeding using the paper feed button.
•During macro executing stand by status.
•When a temporary abnormality occurs in the power supply voltage.
•When an error has occurred.

2.1.3 Interface connector terminal assignments and signal functions

PIN
1
2
3
4,5,6,7,8
Asynchronous
DTR/DSR or XON/XOFF control
MARK= -3 to –15V:
SPACE= +3 to +15V: Logic "0"
4800, 9600, 19200, 38400,57600,115200 bps
None, even, odd
1 or more
Female DSUB-25 pin connector
Software-Tool settings.
SIGNAL I/O
RXD -
TXD -
DTR Output
GND -
Logic "1"
DESCRIPTION
Printer receive data line RS-232C level
Printer transmit data line RS-232C level
Printer handshake to host line RS-232C level
System Ground
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