Example 4) When the time adjustment request ends abnormally (Number of
processing times setting error)
[S1]...U2 [S2]...U21 [D]...DT10
When instruction is executed
■
Cancelation of the time adjustment request
● When the number of processing times is set to zero and the pNTPcREQ instruction is
executed, a time adjustment request that is being executed is canceled.
● Only canceling the request process is performed. The response waiting state for an NTP
request (whose timeout period is fixed to 3 seconds) cannot be canceled.
● The following figures show some cases when the pNTPcREQ instruction is executed with the
number of times (S1) being 2.
1) Normal execution
Instruction execution
No. of processing times（S1）=2
NTP request
Execution result area
First request Second request
During processing
interval
H FFFF H0 or H20 or H30
No. of processing times = 2
2) Cancelation of the processing during an NTP request
Instruction execution
No. of processing times (S1)=2
NTP request
Execution result area
Instruction execution (cancel)
No. of processing times （S1）=0
First request.
H FFFF H0 or H20
No. of processing
times = 0
No. of processing
times = 2
17.10 pNTPcREQ (Time Adjustment Request Instruction)
17-50 WUME-FP7CPUPGR-12
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