Chapter 3 Advanced Usage Hexadecimal dumping mode In hexadecimal dumping mode, data from the host computer is printed in hexadecimal numbers and charac- ters. By comparing the print outs and the program, you can check whether or not data is being sent to the printer correctly. • When there are no characters that correspond to the print data, “ . ” is printed. • If you press the FEED button when there is less than one line of print data, one line is printed. • During hexadecimal dumping mode, applications that check the printer status may not operate correctly. The printer only returns the status for the “Real-time transmission status” command. Follow the steps below.
1 Open the roll paper cover. 2 While pressing the FEED button, turn on the printer. (Hold down the FEED button until the Error LED turns on.) 3 Close the roll paper cover. From this point, all data received by the printer is printed in the corresponding hexadecimal num- bers and ASCII characters. 3 Example of printing in hexadecimal dumping mode 4 To close hexadecimal dumping mode, turn off the printer after printing is complete, or press the FEED button for three times. 57