Operator`s manual

INTERFACE DETAILS
RS-232 SERIAL INTERFACE
The LCM25 has an industry standard RS-232 interface. The default parameters are 9600 baud, 8 data
bits, 1 stop bit and no parity. Other baud rates can be programmed by control codes, or by using a setup
utility. Contact Printek Technical Support for information regarding the setup utility.
Serial data is expected in standard RS-232C format with -12V meaning 'mark' or '1' and +12V a logical '0',
with reference to the common ground. The serial data output line, TxD, transmits XON/XOFF and status
information to the host at the same Baud rate and in the same format as the serial data input. The
hardware busy line is true (nominal -12V) when busy. Both serial output lines will relax to approximately
0V when the printer is in sleep mode, and the user must allow a short period after awakening before
relying on the values of these signals.
Some host equipment use a constant space condition (+12V) to indicate a reset condition or wait state.
Some battery powered host equipment present the same output signal when they go to sleep. The printer
can be set to ignore this condition as detailed in the Programmer’s Manual, but even then this type of host
behavior may result in one or more spurious characters being received and printed.
CONNECTIONS AND EMC PRECAUTIONS
CABLEING DETAILS
The LCM25 Wired printer has a single molded cable, see below for connection details.
MOLDED CABLE CONNECTION INFORMATION
User Cable Detail
Color * Signal Direction Description
Red To Printer Positive Voltage Input (+)
Black ––– Common
White To Printer Shutdown (Active Low)
Blue To Printer RS-232 Rx data
Orange To Host RS-232 Tx data
Green To Host RS-232 Busy
* Cable colours correct at time of writing for cable marked ‘ALPHA WIRE H1 P/N 1176C’
and are subject to variations according to the cable supplier, if in doubt please
contact the factory.
POWER SUPPLY DETAILS
The LCM25 Wired printer is directly powered through the molded cable exiting the rear of the printer.
The printer is designed for direct connection to a +12V or +24V vehicle battery.
On models with the shutdown feature enabled, apply a voltage of 2V or greater to the shutdown Input to
wake the printer.
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