User manual
   ADT-HC4500 CNC Flame/Plasma Controller 
83
Loop 
G80 (End mark of loop) 
For example: 0000 G92 X100 Y100 
0001: G22 L10000 ——Cycle starts 
0002: G00 X50 Y50 
0003: G01 X80 Y80 
0004: G80 ——Cycle ends 
0005: M02 
3.9. G81 workpiece counting 
This instruction is used by the system to count the total workpiece automatically. 
Format: G81 
For example: 0000 G92 X0 Y0 
0001: G22 L3——Cycle starts 
0002: G01 X50 Y50 
0003: G81——Counting 
0004: G80——Cycle ends 
0005: M02 
3.10. G91/G90 relative/absolute coordinate programming 
In G91 (default), it is relative coordinate while in G90 it is absolute coordinate. 
Format: G91 
 G01 X100 
 --- 
3.11. G41/G42/G40 
  Set the cutting gap compensation. It is usually set before perforating and cutting of steel plate, and 
cancelled in M08 instruction. 
 Programming format: 
  G41 Left compensation 
G42 Right compensation 
  G40 Cancel compensation 










