Datamax H-Class Manuel - Page 6

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For direct inputs –

Use the printer's +5VDC and Ground to supply

the devices interfacing to the GPI/O A inputs

(as shown in the sample circuit, right).

For isolated inputs –

To provide galvanic isolation for the GPI/O A

inputs, remove Jumper JMP 9 then supply an

external +5VDC source voltage to Pin 2, and

remove Jumper JMP 8 then supply an external

Ground to Pin 1 (as shown this sample circuit,

right).

Seven dedicated outputs are available for control, warning, and error functions.

These open-collector outputs have slew-limited signal-edge rise and fall times to

prevent cross talk in the cabling. Optional 10K ohm pull-up resistors, tied to a

common point for use at either +5 or +24 VDC, are available via Jumper JMP 1.

Note: If external pull-ups are used (that is, without Jumper JMP1 installed),



ensure that the applied external voltage does not exceed +30VDC.

The table below details the GPI/O A pin assignments, settings and functions.

+5 VDC External Source

GPI/O A - J1

Start of Print

Slew Label

Toggle/Pause

Reprint

Ground