Programmer's Guide User guide

Programmer’s Guide | 1

33 Thermal Printer Programmer’s Guide

PJL GPIO Write Test

Prior to performing the GPIO write test, the GPIO parameters in the database should be

set using either the front panel, PJL variables or by other means. The signal function for

all pins should be “None”. The signal type for all pins should be “High”. For pulse mode,

the “High Pulse” value should be used for output pins. The I/O configuration should be

set with an integer representing a bitwise value where first bit is pin 1, the second bit is

pin 2, etc. One is an input pin and zero is an output pin. Bits 8 – 15 are fixed at 1. For

example, if pins 1-4 are input and pins 5-8 are output, then the resulting value would be

65295 (1111111100001111).

Note: Pins are coupled 1/2, 3/4, 5/6, 7/8.

To start the test, enter the following command:

<ESC>%-12345X@PJL JOB NAME = "JOB_GPIOWRITE_TEST" <LF>

@PJL PERFORM GPIOWRITE = n <LF>

@PJL EOJ <LF>

Where “n” is an integer representing a bitwise value and when the first bit is pin 1, the

second bit will be pin2, etc. One is ON state and zero is OFF state. Only output pins are

used.

For example, if pins 1-4 are output ON and pins 5-8 are input then the resulting value

would be 15 (00001111).

Note: Pins are coupled 1/2, 3/4, 5/6, 7/8.

PJL CONFIG PRINTFILE

To print an internal user label file, issue the following command:

@PJL PERFORM PRINTFILE = “0:filename.pcl” <LF>

@PJL EOJ <LF>

Note: The extension.pcl must be used in order to see the file listed under the internal

user label files on front panel-equipped printers.

PJL CONFIG Command

The custom PJL CONFIG command is used with various functions for printer

configurations. PJL password security in the JOB command protects against

unauthorized use of this command. Please refer to the HP PCL/PJL Technical Reference

Manual for more information on PJL security. These commands will perform an

immediate action when received and should not be part of a PCL print data stream.

The syntax of the command is as follows: