HYDAC CMU 1000 - Manual (Page 103)

Condition Monitoring Unit CMU 1000 Page 103
Revised 17.12.2009 HYDAC ELECTRONIC GMBH Mat.-No.: 669749
7.8 Other Boolean Operations
7.8.1 Note Value
The Note value function is used to hold on to a Boolean value (to
freeze it). It has two Boolean inputs.
If the input value x
2
is "1", then the input value x
1
is output at the
output. If the input value x
2
is "0", then the last output value remains
in effect.
If the value is only to be applied for one flank, then you can put the
function Pulse generation upstream at x
2
(see Chap. 7.8.6).
Inputs x
1
: Value (Boolean)
x
2
: Note (Boolean)
Outputs: y: (Boolean)
Parameters: -
7.8.2 Switching Delay
The Switching delay function is used to delay Boolean signals. The
function has one Boolean input and one Boolean output. A change
at the input will not be recognizable at the output until after a
parameterizable delay time has elapsed.
The delay times can be set separately for switching on and
switching off. . They are adjusted with the parameters Switch-on
delay
and Switch-off delay. This makes it possible to suppress short-
term signal changes from view.
Example:
Input and output are "0", the switch-on delay is set to 5 seconds. If
the input switches now to "1", then the output waits 5 seconds
before switching to "1". If the input switches back to "0" before the 5
seconds have elapsed, then the input remains set to "0" and the
change at the input is not visible at all at the output.
Inputs: x: (Boolean)
Outputs: y: (Boolean)
Parameters: p
1
: Switch-on delay in seconds (Numerical)
p
2
: Switch-off delay in seconds (Numerical)