Datamax MP Compact4 Mark II

Appendix J – General Purpose Input Output Port Applications
Class Series 2 Programmer’s Manual 267
MII Sample SOP Circuit
Pin 3 should be pulled to +5VDC. In additional,
connections for the external Start of Print control can
either be directly made to Pin 4 of the Option Port (or
Main PCB connector) using a TTL-level input, or via an
interface circuit (similar to the one shown). For more
information, see the table below.
1
8
Vcc
Gnd
GPIO Connector Pin Number
3Spare
4SOP
1K
O
1K
O