Rievtech xLogic ELC Series User Manual page 133

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 On, Off and Ax values in a message text.
Does not apply to the comparison of On and Off values! (The compare function ignores the decimal
point.)
The value of ＂On＂,＂Off＂and ＂Dec＂ can be set/modified in parameter mode. For information about
how to set/modify, refer to chapter 4.2.2 please.(Dec means decimal point.)
Timing diagram
Description of the function
The function reads the value of the signal at the analog input Ax.
This value is multiplied by the value of parameter A (gain). Parameter B (offset) is added to the product,
hence
(Ax ∙Gain) + Offset = Actual value Ax.
Output Q is set or reset depending on the set threshold values. See the following calculation rule.
Calculation rule
If threshold (On) ≥ threshold (Off), then:
Q = 1, if the actual value Ax > On
Q = 0, if the actual value Ax ≤Off.
If threshold (On) < threshold (Off), then Q = 1, if
On ≤ the actual value Ax < Off.
133