Omron SYSMAC CV Series - Long Timer: Timl(121)

150
CIO 000000 (input)
CIO 000001 (reset)
Completion Flag (T128)
PV
5-13-4 LONG TIMER: TIML(121)
(121)
TIML D
1
D
2
S
D
2
: PV word CIO, G, A, DM
S: SV word CIO, G, A, T, C, #, DM
D
1
: Completion Flag CIO, G, A, DM
Operand Data AreasLadder Symbol
Description TIML(121) is a decrementing ON-delay timer that can time up to 9,999,999.9 s
(approx. 115 days). A long timer is activated when its execution condition goes
ON and is reset (to SV) when the execution condition goes OFF. Once activated,
TIML(121) times down in units of 0.1 second from the SV. TIML(121) accuracy is
+0.0/–0.1 second.
Unlike most other timers, long timers are not defined using a timer number and
timer numbers are not needed to access the Completion Flag and PV. The
Completion Flag is bit 00 of D
1
, the PV is maintained in D
2
and D
2
+1, and the SV
is specified in S and S+1. Bits 01 through 15 of D
1
cannot be used.
Precautions D
2
and S cannot be the last address in a data area because these operands des-
ignate the first of two words.
The set value must be BCD between 0,000,000.0 and 9,999,999.9 and must be
BCD. The decimal point is not entered.
The same D
1
, D
2,
and D
2
+1 can be used in only one TIML(121) instruction.
Long timers in interlocked program sections are reset when the execution condi-
tion for IL(002) is OFF. Unlike TIM timers and high-speed timers, long timers in
jumped program sections do not continue counting, but maintain the PV.
Power interruptions will reset timers unless the IOM Hold Bit and PC Setup are
set to retain timer PVs during power interruptions. If a timer that is not reset un-
der these conditions is desired, Auxiliary Area clock pulse bits can be counted to
produce accumulative timers using CNT. Refer to 5-13-6 COUNTER: CNT for
details.
Long timers will not restart after timing out unless reset by turning OFF the
execution condition or unless the PV is set to a value other than zero.
A delay of one cycle is sometimes required for a Completion Flag to be turned
ON after the timer times out.
The long timer is inaccurate when the cycle time exceeds 25 s.
Physical limitations restrict TIML(121) accuracy to a maximum of ±0.36 s/h.
Note: Refer to page 115 for general precautions on operand data areas.
Flags ER (A50003): Content of *DM word is not BCD when set for BCD.
SV is not BCD.
Example When CIO 00000 turns ON in the following example, the SV (0086 4000) will be
set into CIO 0101 and CIO 0100. As long as CIO 000000 remains ON, the PV in
Timer and Counter Instructions Section 5-13