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Timer and Counter Instructions Section 3-5
Example 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 0000.
When CIO 0.00 goes OFF, the timer PV will be reset to the SV and the Com-
pletion Flag will be turned OFF.
3-5-2 HIGH-SPEED TIMER: TIMH(015)/TIMHX(551)
Purpose TIMH(015)/TIMHX(551) operates a decrementing timer with units of 10-ms.
The setting range for the set value (SV) is 0 to 99.99 s for TIMH(015) and 0 to
655.35 s for TIMHX(551). The timer accuracy is 0 to 0.01 s.
Ladder Symbol
Variations
Applicable Program Areas
CIO 0.00
T0000
T0000
0.00
#100
Timer input
Timer PV
Timer
Completion
Flag
PV
refresh
method
Symbol Operands
BCD N: 0000 to 4095 (decimal)
S: #0000 to #9999 (BCD)
Binary N: 00000 to 4095 (decimal)
S: &0 to &65535 (decimal)
#0000 to #FFFF (hex)
TIMH(015)
N
S
N: Timer number
S: Set value
TIMHX(551)
N
S
N: Timer numbe
S: Set value
Variations Executed Each Cycle for ON Condition TIMH(015)/
TIMHX(551)
Executed Once for Upward Differentiation Not supported.
Executed Once for Downward Differentiation Not supported.
Immediate Refreshing Specification Not supported.
Block program areas Step program areas Subroutines Interrupt tasks
Not allowed OK OK Not allowed
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