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Timer instructions
F137_STMR
The auxiliary timer instruction F137_STMR is a down type timer. The formula of the timer-set time
Description
is 0.01 sec. * set value s (time can be set from 0.01 to 327.67 sec.). If you use the special internal
relay R900D as the timer contact, be sure to program it at the address immediately after the
instruction.
Timer operation:
If the trigger EN of the auxiliary timer instruction (STMR) is in the ON-state, the
constant or value specified by s is transferred to the area specified by d.
During the timing operation, the time is subtracted from the value in the area
specified by d.
The output ENO turns ON when the value in the area specified by d becomes 0.
Availability of F137_STMR (see page 1321)
PLC types
Data types
Variable
Data type
s
ANY16
d
The variables s and d have to be of the same data type.
Operands
For
s
d
In this example the function is programmed in ladder diagram (LD).
Example
POU header
All input and output variables used for programming this function have been declared in the POU
header.
LD
934
Timer 16-bit
Function
16-bit area or equivalent constant for timer set value
16-bit area for timer elapsed value
Relay
WX
WY
WR
WL
-
WY
WR
WL
T/C
Register
SV
EV
DT
LD
FL
SV
EV
DT
LD
FL
Constant
dec. or hex.
-
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