Rievtech EXM-12DC-DA-R-HMI, User Manual

Page: 345 / 443

345
Short description
The Max/Min function block records the maximum or minimum value.
Connection Description
Input En The function of input En (Enable) depends on the settings of parameter Mode and the
selection of check box "when En = 0, reset Max/Min".
Input S1 This input is enabled when you set Mode =2:
A positive transition (0 to 1) at input S1 sets the output AQ to the maximum value..
A negative transition (1 to 0) at input S1 sets the output AQ to the minimum value.
Input Ax Input Ax is one of the following analog signals:
Analog Inputs
Analog Outputs
Analog flags
Block number of a function with analog output
Parameter
Mode
Possible settings: 0, 1, 2, 3
Mode = 0: AQ = Min
Mode = 1: AQ = Max
Mode = 2 and S1= 0 (low): AQ = Min
Mode = 2 and S1= 1 (high): AQ = Max
Mode = 3 or a block value is referenced: AQ = Ax
Output AQ AQ outputs a minimum, maximum, or actual value depending on the inputs, or is reset to
0 if configured to do so when function is disabled
Analog inputs: 0 to 10 V corresponds with 0 to 1000 (internal value).
Parameter Mode
You can set the values for parameter Mode based on the actual values of another already-programmed
function:
Analog comparator: Ax - Ay
Analog threshold trigger: Ax
Analog amplifier: Ax
Analog multiplexer: AQ
Analog ramp: AQ
Mathematic instruction: AQ
Up/Down counter: Cnt
Threshold trigger: Fre
Max/Min: Ax
PI controller: AQ