Hitachi PXR-D, Instruction Manual

Page: 49 / 319

1-38 ● Connection of signals
1.5.3-8 Print output signal (output)
The following shows the wiring of the signal that is outputted when a printing
operation is being conducted or completed by the IJ printer.
(a) Wiring
TB1
12
13 GND
Print output
Load
¡
If a relay, solenoid, or other inductive load is employed, connect a counter-
electromotive force generation prevention diode in parallel with the load.
¡
The load circuit is for DC only. It cannot be used with an AC load.
Output specifications
GND
Vd
IL
V
CE
+12V
Tr
GND
IJ printer External device
TB1
12
13
1.5.3-7 Reciprocative printing signal (input)
The following shows the connection terminal for the signal that delivers instructions for a
change in the order of characters to be printed.
When the input is OFF: Forward transport
When the input is ON: Backward transport
1 2 3 1 2 3 (The arrow indicates
the sequence of printing.)
OFF state ON state
Input specifications
・ A no-voltage contact must be used for
input.
・ In the case of noncontact, the following
requirements must be met.
Withstanding voltage : 12 VDC or more
Maximum drive current: 12 mA or more
Residual voltage : 2 V or less
Leak current : 0.1 mA or less
Drive method : Open collector
(No-voltage contact)
A current of about
12 mA flows.
TB1
GND
Signal
9
11
(Example)
※
100 ms min.
Reverse direction printing signal
Print object detection signal
Ensure that the interval between reciprocative printing signal
changeover (ON
→ OFF or OFF → ON) and print object detection
signal input is at least 100 ms.
OFF
OFF
ON
ON
Operation when
changing the
correspondence
between signal
ON/OFF and printing
direction:
(See "4.2 Setting up
User Environment")
¡ The output transistor (Tr) is of an open collector type. It operates as indicated below.
While printing is performed (printing-completed signal ON) : Tr ON
While no printing is performed (printing-completed signal OFF) : Tr OFF