Long Timer: Timl(121) - Omron SYSMAC CVM1 Series Operation Manual

Timer and Counter Instructions

5-13-4 LONG TIMER: TIML(121)

Ladder Symbol
(121)
TIML D
1
Description
Differences in CVM1D and
C/CVM1/CV-series PCs
1, 2, 3...
Precautions
The following figure illustrates the relationship between the execution conditions
for an accumulative timer with a set value of 10 s, its PV, and the Completion
Flag.
CIO 000000 (input)
CIO 000001 (reset)
Completion Flag (T128)
PV
Operand Data Areas
D : Completion Flag
1
D S
2
D : PV word
2
S: SV word
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.
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
is specified in S and S+1. Bits 01 through 15 of D
Operation of TIML(121) is the same in CVM1D and C/CVM1/CV-series PCs ex-
cept for the timer precision and PV refreshing in jumped program sections.
1. Timer Precision
TIML(121) instruction errors can be one cycle time or more (up to two cycle
times). The error range is ± (100 ms + cycle time).
2. Operation of the TIML(121) Instruction between JMP(004) and JME(005)
• The timer PV is refreshed every cycle during program execution.
• The timer operates normally while the execution condition of JMP(004) is
ON.
• The timer does not operate while the timer is jumped (while the execution
condition of JMP(004) is OFF), whether the timer's execution condition is
ON or OFF.
D and S cannot be the last address in a data area because these operands des-
2
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 , D and D
1 2,
Long timers in interlocked program sections are reset when the execution condi-
tion for IL(002) is OFF. Timing is disabled for long timers in jumped program sec-
tions, even if the timer's execution condition is ON.
CIO, G, A, DM
CIO, G, A, DM
CIO, G, A, T, C, #, DM
, the PV is maintained in D
1
+1 can be used in only one TIML(121) instruction.
2
Section 5-13
and D +1, and the SV
2 2
cannot be used.
1
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