One-Ms Timer: Tmhh(540)/Tmhhx - Omron SYSMAC CJ - REFERENCE MANUAL 08-2008 Reference Manual

Timer and Counter Instructions
Example
3-6-3

ONE-MS TIMER: TMHH(540)/TMHHX(552)

Purpose
Ladder Symbol
Variations
When timer input CIO 000000 goes from OFF to ON in the following example,
the timer PV will begin counting down from the SV (#0064 = 100 = 1.00 s).
The Timer Completion Flag, T0000, will be turned ON when the PV reaches
0000.
When CIO 000000 goes OFF, the timer PV will be reset to the SV and the
Completion Flag will be turned OFF.
Timer input
CIO 000000
Timer PV
T0000
or
Timer Completion
Flag
TIMHX
T0000
&0100
TMHH(540)/TMHHX(552) operates a decrementing timer with units of 1-ms.
The setting range for the set value (SV) is 0 to 9.999 s for TMHH(540) and 0
to 65.535 for TMHHX(552). The timer accuracy is –0.001 to 0 s.
Note The timer accuracy for CS1D CPU Units is 10 ms + the cycle time. The timer
accuracy for unit version 4.1 of the CJ1-H-R CPU Units is 0.01 to 0 s. The
timer accuracy for other unit versions of the CJ1-H-R CPU Units is 0.001 to
0 s.
PV
refresh
method
BCD
Binary
Note In CJ1-H-R CPU Units other than those with unit version 4.1, N can be set to
between 0 and 4,095 decimal. In CJ1-H-R CPU Units with unit version 4.1, N
can be set only to between 16 and 4095 decimal. For details, refer to Refresh-
ing of TMHH(540) and TMHHX(552) PVs and Completion Flags on page 256.
Variations
Immediate Refreshing Specification
#0100
(1.00 s)
Symbol
TMHH(540)
N
N: Timer number
S
S: Set value
TMHHX(552)
N N: Timer number
S S: Set value
Executed Each Cycle for ON Condition
Executed Once for Upward Differentiation
Executed Once for Downward Differentiation Not supported.
Section 3-6
Operands
N: 0 to 15 decimal, or
0 to 4,095 decimal
(See note.)
S: #0000 to #9999 (BCD)
N: 0 to 15 decimal, or
0 to 4,095 decimal
(See note.)
S: &0 to &65535 decimal
#0000 to #FFFF hex
TMHH(540)/
TMHHX(552)
Not supported.
Not supported.
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