Firmware
≤
11.00 - DMS 8.0 EN - 10/2011
L
789
8400 StateLine C | Reference manual
Function library
Function blocks | L_Compare_1
16.1.11.3 Function 3: nIn1 < nIn2
This function serves, for instance, to implement the comparison "actual speed is lower
than a limit value" (n
act
< n
x
) for one direction of rotation.
[16-8] Function 3: Switching performance
Functional sequence
1. If the value at
nIn1_a
falls below the value at
nIn2_a
,
bOut
changes from FALSE to
TRUE.
2. Only if the signal at
nIn1_a
exceeds the value of
nIn2_a
-
hysteresis
again,
bOut
changes
back from TRUE to FALSE.
[16-9] Function 3: Example
n
C00681
: Hysteresis
TRUE
FALSE
bOut
nIn2_a
nIn1_a
n
C00681
: Hysteresis
nIn1_a
nIn2_a
TRUE
FALSE
bOut
t
t
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