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2 Instructions
2-68
CP1E CPU Unit Instructions Reference Manual(W483)
*1 If the IOM Hold Bit (A500.12) has been turned ON, the status of timer Completion Flags and PVs will be maintained when
the operating mode is changed.
*2 The PV will be set to the SV when TIM/TIMX(550) is executed.
• When TIM/TIMX(550) is in a program section between IL(002) and ILC(003) and the program section
is interlocked, the PV will be reset to the SV and the Completion Flag will be turned OFF.
• When an operating TIM/TIMX(550) timer is in a jumped program section (JMP(004), CJP(510),
JME(005)), the timer’s PV will not be refreshed.
• When a TIM/TIMX(550) timer is forced set, its Completion Flag will be turned ON and its PV will be
set to 0000. When a TIM/TIMX(550) timer is forced reset, its Completion Flag will be turned OFF and
its PV will be reset to the SV.
• The timer’s Completion Flag is refreshed only when TIM/TIMX(550) is executed, so a delay of up to
one cycle may be required for the Completion Flag to be turned ON after the timer times out.
• If online editing is used to overwrite a timer instruction, always reset the Completion Flag. The timer
will not operate properly unless the Completion Flag is reset.
Sample program
When timer input CIO 0.00 goes from OFF to ON in the following example, the timer PV will begin
counting down from the SV. Timer Completion Flag T0000 will be turned ON when the PV reaches 0.
When CIO 0.00 goes OFF, the timer PV will be reset to the SV and the Completion Flag will be turned
OFF.
i
Condition PV Completion Flag
Operating mode changed from RUN or MONITOR mode
to PROGRAM mode or vice versa.
*1
0OFF
Power off and reset
0OFF
Execution of CNR(545)/CNRX(547), the RESET
TIMER/COUNTER instructions
*2
BCD: 9999
Binary: FFFF
OFF
Operation in interlocked program
section (IL(002)–ILC(003))
Reset to SV. OFF
Operation in jumped program section
(JMP(004)–JME(005))
Retains previous
status.
Retains previous
status.
0.00
100
T0000
T0000
or
0.00
TIM
0000
#0100
TIMX
0000
&0100
0.00
ON
OFF
ON
OFF
ON
OFF
Timer input
Timer PV
Timer
Completion
Flag