Epson C82315 - Manual (Page 28)

HEX PRINT
During hex print, the printer prints the data received in hexadecimal format. You
can then check if the data you are sending is reaching the printer.
The printer prints this hex data on a grid corresponding to the data’s position in
the buffer. If the hex data represents a printable character, that character is printed
to the right of the hex data.
Turn switch 5 on to enter hex print mode.
See Appendix A-4 for hex print sample.
COMMUNICATIONS TEST
The C82315* can mimic a host computer and send commands to the twin-axial
cable. You can use this feature to test a second printer connected to the same
twin-axial cable.
Follow the steps below to perform the communications test.
1. Make sure that both printers are set to the same-cable address, and that the
Epson printer is turned off.
2. Make sure that the cable end attached to the second printer is set for
termination, or uses an auto-termination cable, and that the cable is not
connected to a host system.
3. Turn switch 5 on to print the buffer diagnostic test.
4. Turn on the Epson printer; then press the TEST button on the inter face.
The second printer should then print the buffer diagnostic test header, print out
any errors encountered in communications, and then print the EBCDIC character
set.
5. After completing the test, turn off the Epson printer and return switch 5 to the
off position.
INTERFACE DIAGNOSTICS
During interface diagnostics, the interface transmits data to itself and then
analyzes how that data is processed. If an error is detected, an error message is
printed on the printer. A list of error messages is listed at the end of this section.
Follow the steps below to perform interface diagnostics.
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