Salter Brecknell CP103 - Manual (Page 8)

6 CP103 Thermal Printer User Instructions
2 Communication
The CP103 Mini Thermal Printer uses a RS-232 serial interface connection with the
host communication. If a serial port is unavailable on the host device, it is possible to
use a serial / USB converter.
2.1 RS-232 Serial Interface
RS-232 is developed according to the EIA standard asynchronous transmission serial
interface. The specifications are as following:
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Data transmission: serial interface
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Synchronization: asynchronous
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Signal Level: RS-232 level, logic 1:-5.4v, logic 0: +5.4v
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Hardware Flow Control: optional
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Baud rate: 1200 bps to 115200 bps (NOTE: At 1200 baud, continous
printing mode of data sending from Host is not supported)
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Data word length: 8 bits
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Stop bit: 1bit
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Parity: None
The printer self-testing page will show the current baud rate. The default baud rate is
115200bps. Refer to Chapter
3 for details on the Printer Self Test.
2.2 CP103 Printer PS/2 Connector
The following drawing illustrates the PS2 socket pinout located on the CP103 printer.
This connection is used for RS-232 communication with an indicator or computer and
requires the PS2 to RS-232 interface cable (serial cable).
Pin Description
1 TXD - data output
2 no connection
3 GND
4 no connection (12V DC- IN is optional)
5 RXD - data input
6 no connection (12V DC- IN is optional)