User manual

AP 230 USER MANUAL 48
The PRINT signal is activated (transistor ON) at the beginning of the printing phase
of each label, as soon as the stepper motor starts moving, and is deactivated
(transistor OFF) at the end of the cycle, which includes the cutting or application
phase, if the printer is equipped with the optional cutter or applicator and they are
enabled. This signal is also activated if a single cut or application cycle is requested
with the /! command.
The +5 VDC and +22 VDC pins, together with the GROUND pin, are provided to easy
interfacing of external circuits requiring a limited amount of power, directly supplied
by the printer, with no need for an external power supply. This is specially useful
when relays are used to buffer the READY and PRINT signals and provide clean
contacts to the external world.
The +22 VDC pin carries out the printhead supply voltage, which has a nominal
value of 22 volts, but it may vary in the range of 16 to 25 volts, depending on current
printhead temperature and power setting (the nominal value is obtained at 25°C with
power setting of 730 mW for the 6 dots/mm and 580 mW for the 8 dots/mm).
Here below the pinout and singnals present on 9 pin male connector:
1 5
6 9
PIN SIGNAL
1
+ READY output signal
(collector of NPN optocoupled transistors )
2
- READY output signal
(emitter of NPN optocoupled transistor)
3
+ START input signal
(anode of optocoupler' s diode)
4
- START input signal
(cathode of optocoupler' s diode)
5 GROUND (non optocoupled)
6
+ 5 VDC (non optocoupled, 100 mA max)
normaly non connected
7
+ PRINT output signal
(collector of NPN optocoupled transistors)
8
- PRINT output signal
(emitter of NPN optocoupled transistor)
9
+ 22 VDC
(non optocoupled, 500 mA max, ± 25%)