Ny-Series Instructions Reference Manual (W560 - Omron NY532-5400 Reference Manual

2 Instruction Descriptions
Precautions for Correct Use
• The timing error for which Q is TRUE for PT is −100 ns to (100 ns + 1 task period).
The above range includes the following:
• The ±100 ns is the timing error of ET.
• Time ET is judged to see if it has reached PT every task period. If time ET reaches PT immedi-
ately after the judgement is completed, there is a delay of one task period.
• The time is displayed in increments of 0.001 ms on the Sysmac Studio, but the timing accuracy is 1
ns.
• If In and Reset are both TRUE, Reset has priority. That is, ET changes to 0 and Q changes to FALSE.
• The timer starts as soon as operation starts if In is already TRUE.
• If T#0ms or a negative number is set for PT, Q will change to TRUE as soon as the value of In
changes to TRUE.
• You can change the value of PT before the value of ET reaches the value of PT. Operation is as fol-
lows:
Timer status
After comple- TRUE
tion of timing
Timing in
FALSE
progress
• If this instruction is in a master control region and the master control region is reset, the operation is
as follows:
• The timer stops. The values of ET and Q at that time are retained.
• When the master control reset is cleared, ET is incremented again from the value that was
retained.
• If an Out instruction is connected to Q, the execution condition to the Out instruction is FALSE
even if the value of Q is TRUE.
• Reset is enabled.
• If this instruction is not executed due to the execution of a jump instruction (e.g., the JMP instruction),
the value of ET is not updated. However, timing still continues. Therefore, ET is updated to the correct
value the next time the instruction is executed.
• If this instruction is used in a ladder diagram, the value of Q changes to FALSE if an error occurs in
the previous instruction on the rung.
2-140
Value of PT after it is
Value of Q
changed
---
PT ≥ ET
PT < ET
Operation
The value of Q remains TRUE.
The value of ET also does not change. (It remains at
the value of PT before it was changed.)
When the value of In changes to TRUE, timing is
continued. When the value of ET reaches the value
of PT, the value of Q changes to TRUE and ET is no
longer incremented.
When the value of In changes to TRUE, the value of
Q changes to TRUE immediately. Incrementing ET
stops immediately.

NY-series Instructions Reference Manual (W560)