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Siemens SIMATIC S5-95F - Page 197

Siemens SIMATIC S5-95F
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S5-95F STEP 5 Operations
Example: KT 40.2 corresponds to 40 x 1 s.
Tolerance:
The time tolerance is equivalent to the time base.
OperandExamples Time Interval
400 × 0.1 s - 0.1 s 39.9 s ... 40 s
40 × 1 s - 1 s 39 s ... 40 s
4 × 10 s - 10 s 30 s ... 40 s
KT 400.1
KT 40.2
KT 4.3
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Possible
settings for
the time
40 s
Note
Always use the smallest time base possible.
Loading a Time as an Input, Output, Flag, or Data Word
Load Statement: L DW 2
The time 638 s is stored in data word DW2 in BCD code.
Bits 14 and 15 are insignificant for the time value.
11
015
1 0 1 0
Bit
Time base
Three-digit time value
(in BCD code)
DW 2
011100010 0
Key for Time Base:
Base 0 0 0 1 1 0 1 1
Factor 0.01 s 0.1 s 1 s 10 s
You can also use the control program to write to data word DW2.
Example: Store the value 270 x 100 ms in data word DW2 of data block DB3.
C DB 3
L KT 270.1
T DW2
EWA 4NEB 812 6210-02
8-17

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