6 PX940 Applicator Interface Installation Instructions
3 Start print Input Pulse Mode - prints one and only one label 
whenever this pin is pulled to ground. Signal 
must be de-asserted and reasserted to print 
another label.
• Printing starts on HIGH to LOW transition if 
format is ready.
• De-assert this signal to HIGH to inhibit 
printing.
Level Mode - prints labels continuously when 
this pin is pulled to ground. Printing is 
disabled when signal is de-asserted. If a label 
is printing when de-asserted, printing stops 
after the label is complete.
• Assert LOW to start printing if format is 
ready.
• De-assert HIGH when current label has 
finished printing. Remains de-asserted 
while waiting for the next label to be ready to 
print.
4 Feed Input Assert LOW to feed label stock. De-assert 
HIGH to stop feeding labels. 
5 Pause  Input Assert LOW for 200ms and then de-assert 
HIGH to toggle between pause and un-pause 
states.
6 Reprint Input Enables Reprint mode via software. When 
this mode in enabled, assert LOW to reprint 
last label. This input is ignored when reprint 
mode is disabled.
7 +24VDC Output Power for external devices: +24VDC (±10%) 
@ 2A.
8Power 
ground
Ground +24VDC return.
9 Ribbon/
Media low
Output
Goes LOW when the ribbon/media roll 
diameter drops below a predefined level, 
otherwise Goes HIGH.
Media low is supported only by I-Style.
Pin Signal Type Description