Datamax-oneil H-Class GPIO Option Manual do Utilizador descarregar pdf (Página 8)

► GPI/O B (J2)

Six unassigned inputs are designed to interface to open-collector outputs. These

inputs require no external pull-ups, while blocking diodes allow the use of totem pole

outputs from +4.5 VDC to + 26 VDC. Optical isolators provide galvanic isolation. Two

print control interface circuit examples are given below.

For direct inputs:

Use the printer’s +5VDC to supply the devices

interfacing to the GPI/O B inputs (as shown in

the sample circuit, right).

GPI/O B - J2

Input 1

Ground

Input 2

Input 3

Input 4

Input 5

Input 6

For isolated inputs:

To provide galvanic isolation for the GPI/O B

inputs, remove Jumper JMP 11 then supply an

external +5VDC source voltage to Pin 1, and

remove Jumper JMP 10 then supply an

external Ground to Pin 6 (as shown in the

sample circuit, right).

Vcc

+5 VDC External Source

GPI/O B - J2

Input 1

Input 2

Input 3

Input 4

Input 5

Input 6

Ground

Six unassigned outputs have slew-limited signal-edge rise and fall times to

prevent cross talk in the cabling. Optional 10K ohm pull-up resistors, one for each of

the output lines, can be used at either +5 or +24 VDC via Jumpers JMP 2 – 7.



Note: If external pull-ups are employed (that is, when Jumpers JMP 2 - 7 are

not installed), ensure that the applied external voltage does not exceed

+30VDC.

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

1 2 3 4 5 6 7 8 9 10 11 12 13 14

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