Siemens SIMATIC S7 F, Руководство пользователя

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Fail-Safe Blocks
Fail-Safe Systems
8-114
A5E00085588-03
8.12 Arithmetic Blocks with the INT Data Type
Block Description
F_LIM_I Asymmetrical limiter of INT values
8.12.1 F_LIM_I
Function
This block compares the input variables IN, MAX and MIN. It checks whether IN is
within or outside the interval between MIN and MAX. If the lower limit (MIN) of the
interval is greater than or equal to the upper limit (MAX), the output OUT = MAX
and the outputs OUTU and OUTL are set to 1. If IN is > MAX, the upper limit has
been violated, OUT = MAX, OUTU = 1 and OUTL = 0. If IN is < MIN, the lower limit
has been violated, OUT = MIN, OUTU = 0 and OUTL = 1. If IN is between MIN and
MAX, OUT = IN, OUTU = 0 and OUTL = 0 are set.
I/Os
Name Data Type Explanation Default
Inputs: IN F_INT Input variable 0
MIN F_INT Lower limit -32768
MAX F_INT Upper limit 32767
Outputs: OUT F_INT Output variable 0
OUTU F_BOOL Upper limit violation 0
OUTL F_BOOL Lower limit violation 0
Error Handling
None