Hydac CMU 1000 User Manual download pdf (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

is "1", then the input value x

is output at the

output. If the input value x

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

(see Chap. 7.8.6).

Inputs x

: Value (Boolean)

: 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

: Switch-on delay in seconds (Numerical)

: Switch-off delay in seconds (Numerical)

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Hydac CMU 1000 User Manual Page 103