Omron SYSMAC C200H, Руководство по эксплуатации

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5-12-1 TIMER – TIM
N: TC number
# (000 through 511)
Ladder Symbol
Definer Values
SV: Set value (word, BCD)
IR, AR, DM, HR, LR, #
Operand Data Areas
TIM N
SV
SV is between 000.0 and 999.9. The decimal point is not entered.
The SV of the timers can be set in the range #0000 to #9999 (BCD). If the
SV for a timer is set to #0000 or #0001, it will operate in the following way. If
the SV is set to #0000, when the timer input goes from OFF to ON, the Com-
pletion Flag will turn ON. If the SV is set to #0001, because the timer accu-
racy is 0 to –0.1 s, the actual time will be a value between 0 and 0.1 s, and
the Completion Flag may turn ON as soon as the timer input goes from OFF
to ON. With other values also, allow for a timer accuracy of 0 to –0.1 s when
setting the SV.
Each TC number can be used as the definer in only one TIMER or COUNT-
ER instruction.
TC 000 through TC 015 should not be used in TIM if they are required for
TIMH(15). Refer to 5-12-2 HIGH-SPEED TIMER – TIMH(15) for details.
A timer is activated when its execution condition goes ON and is reset (to
SV) when the execution condition goes OFF. Once activated, TIM measures
in units of 0.1 second from the SV.
If the execution condition remains ON long enough for TIM to time down to
zero, the Completion Flag for the TC number used will turn ON and will re-
main ON until TIM is reset (i.e., until its execution condition is goes OFF).
The following figure illustrates the relationship between the execution condi-
tion for TIM and the Completion Flag assigned to it.
Execution condition
Completion Flag
ON
OFF
ON
OFF
SV SV
Timers in interlocked program sections are reset when the execution condi-
tion for IL(02) is OFF. Power interruptions also reset timers. If a timer that is
not reset under these conditions is desired, SR area clock pulse bits can be
counted to produce timers using CNT. Refer to 5-12-3 Counter – CNT for de-
tails.
Program execution will continue even if a non-BCD SV is used, but timing will
not be accurate.
Limitations
Description
Precautions
Timer and Counter Instructions
Section 5-12