Chapter 7 — Commands
98 ESim for the PC4 and PF8 Printer Programmer’s Reference Manual
.
Remarks: Media feeding is disrupted by pressing the Feed key or by 
opening the cover.
Example 1:
The following command feeds the media forward 360 steps, 
make the printer detect a gap/black mark before the next print 
job, and cause a delay of 3 seconds after the feed. The red LED 
blinks during the delay. 
PF360,0,30 
Example 2:
The following command retracts the media 360 steps and assume 
that the media is in printing position.
PF-360,1 
Q - Set Form Length (Gap or Slot)
Purpose: This command is used to set the form and gap length when using 
the label gap sensor, or the amount of media feed after the print 
image in case of continuous stock.
Syntax: Qp1,p2[±p3]
PF Command Parameter Descriptions  
Parameter Description
p
1
Number of steps to feed the media. Positive values feed 
the media forward, negative values backward. Range is -
999 to 9999.
p
2
Position control after feeding. Allowed values:
0 = The media has unknown position. Printer needs 
label gap/black mark detecting before next print job 
(default).
1 = Media is located in the printing position.
2 = Media feed stops when Black mark/label gap is in 
sensor position or, if no black mark/gap is detected, 
when p
1
 dots are stepped (error 99 is reported).
p
3
Option delay after feeding. Delay is p
3
*100 ms.