Easy xLogic, User Manual

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4 4 4 4.4.24 .4.24 .4.24 .4.24 Analog Analog Analog Analog value value value value monitoring monitoring monitoring monitoring
Short Short Short Short description description description description
This special function saves the process variable of an analog input to memory, and sets the
output when the output variable exceeds or drops below this stored value plus a configurable
offset.
Parameter Parameter Parameter Parameter p p p p (number (number (number (number of of of of decimals) decimals) decimals) decimals)
The two threshold parameters Threshold 1 and Threshold 2 can be provided by the actual value
of another already-programmed function:
Analog comparator: Ax – Ay
Analog trigger: Ax
Analog amplifier: Ax
Analog multiplexer: AQ
Analog ramp: AQ
Analog math: AQ
PI controller:AQ
Data latching relay: AQ
Up/Down counter: Cnt
Applies only to the display of Aen, Ax and Delta values in a message text.
Connection Connection Connection Connection Description Description Description Description
Input En En En En A positive edge (0 to 1 transition) at input En saves
the analog value at input Ax ("Aen") to memory and
starts monitoring of the analog range Aen ± Delta.
Input Ax Ax Ax Ax You apply the analog signal to be monitored at input
Ax.
Use the analog inputs AI1...AI8,
the analog
outputs AQ1 and AQ2.
0 - 10 V is proportional to 0 - 1000 (internal value).
Parameter A: A: A: A: Gain
Range of values: ± 10.00
B: B: B: B: Zero offset
Range of values: ± 10,000
Delta: Delta: Delta: Delta: Difference value for the Aen on/off threshold
Range of values: ± 20,000
p: p: p: p: Number of decimals
Range of values: 0, 1, 2, 3
Output Q
Q Q
Q Q is set/reset, depending on the stored analog value
and the offset.