Siemens SIMATIC S5-115U User Manual page 216

STEP 5 Operations
Loading a Time
Timer operations call internal timers.
When a timer operation is started, the word in ACCUM 1 is used as a time value. You must
therefore first specify time values in the accumulator.
You can load a timer with any of the following data types:
KT constant time value
or
DW data word
IW input word
QW output word
FW flag word.
Loading a Constant Time Value:
The following example shows how you can load a time value of 40 sec.
L KT 40.2
Key for Time Base:
Base 0
Factor 0.01 s
8-16
These data types must be
in BCD code.
Operation
Operand
Coded time base (0 to 3)
Time (0 to 999)
1 2 3
0.1 s 1 s 10 s
S5-115U Manual
EWA 4NEB 811 6130-02b