Chapter 6 Instruction Details
XBC E-Type Main Unit 6-293 Ve r. 1
6.41.2 DUTY
Instruction
Step
P M K F L T C S Z D.x
R.x
U N D R
DUTY
4 - - -
Operand Description Data Type
D F100 ~ F107 BIT-
N1 Number of scans to be ON WORD
N2 Number of scans to be OFF WORD
1) DUTY
(1) It generates the pulse to make user’s timing pulse F area (F100~F107) specified in D. On for N1 scan
and Off for N2 scan.
(2) If input condition is Off, the timing pulse (F100~F107) will be Off.
(3) If N1 = 0, the timing pulse will be always Off.
(4) If N1 > 0, N2 = 0 , the timing pulse will be always On.
(5) If DUTY instruction operates to start generating the timing pulse with input condition ON, the timing
pulse will be continuously produced even if duty’s input condition is Off.
2) Program Example
Remark
(1) Timing pulse will keep operating even if DUTY instruction applicable to specific timing pulse is cancelled through
modification during Run.
Input
condition
DUTY
Timing
N1 scan
N2 scan
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