Appendix J – General Purpose Input Output Port Applications
Class Series 2 Programmer’s Manual 265
I-Class GPIO
I-Class GPIO functions are detailed in the table below:
I-Class GPIO Overview
Pin
Number
Signal
Name
Signal
State
Signal
Direction*
Description
1
Vcc +5 VDC Output +5 VDC power supply.
2
Ribbon
Fault
Low
Output
Goes low when a ribbon out condition is
detected.
3
Paper
Fault
Low
Output
Goes low when an out of stock condition is
detected.
4
Printer
Fault
Low
Output Goes low when any printer fault is detected.
5
Ribbon
Low
Programmable
Output
Goes high (or low) when a low ribbon supply
is detected.
6
End of
Print
Programmable
Output
Goes high (or low) when printing is
complete, typically monitored to initiate the
next Start of Print sequence.
7
Backup
Label
Programmable
Input
When received, will position a presented
label for printing, provided that the
programmed present distance is greater
than zero.
8
Start of
Print Signal
(SOP)
Programmable
Input
When received, begins printing. (If the
printer awaits the SOP signal, WAITING FOR
SIGNAL will be displayed).
9
Signal
Ground
Ground
N/A Ground return.
GPIO pin configuration (illustrated right), as viewed from the
rear of the printer:
I-Class Control Circuit
Connections for an external Start of Print / Backup Label control
can be made (1) directly to Pin 8 / 7 using a TTL-level input or
(2) with an interface circuit similar to the one shown right. For
additional interfacing requirements; see the table above.
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