Easy xLogic User Manual

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Data latching relay: AQ
Up/Down counter: Cnt
Parameter p applies to the display of V1, V2, V3, V4 and AQ in a message text.
Description
Description
Description
Description of
of
of
of the
the
the
the function
function
function
function
The analog math function combines the four operands and three operators to form an equation. The operator
can be any one of the four standard operators: +, -, *, or /. For each operator , you must set a unique priority
of High ("H"), Medium ("M"), or Low ("L"). The high operation will be performed first, followed by the medium
operation, and then by the low operation. You must have exactly one operation of each priority. The operand
values can reference another previously-defined function to provide the value. The analog math function
rounds the result to the nearest integer value.
The number of operand values is fixed at four and the number of operators is fixed at 3. If you need to use
fewer operands, use constructions such as " + 0" or " * 1" to fill the remaining parameters.
You can also configure the behavior of the function when the Enable parameter "En"=0. The function block
can either retain its last value or be set to 0.
Possible
Possible
Possible
Possible errors:
errors:
errors:
errors: Zero
Zero
Zero
Zero division
division
division
division and
and
and
and overflow
overflow
overflow
overflow
If the analog math function block execution results in zero division or overflow, it sets internal bits that
indicate the type of error that occurred. You can program an analog math error detection function block in
your circuit program to detect these errors, and to control the program behavior as needed. You program one
analog math error detection function block to reference one specific analog math function block.
Examples
The following tables show some simple example analog math block parameters, and the resulting equations
and output values:
V1 Operator1 V2 Operator2 V3 Operator3 V4
12 +(M) 6 /(H) 3 -(L) 1
Equation: (12 + (6 / 3)) - 1
Result: 13
V1 Operator1 V2 Operator2 V3 Operator3 V4
2 +(L) 3 *(M) 1 +(H) 4
Equation: 2+ (3*(1+4))
Result: 17
V1 Operator1 V2 Operator2 V3 Operator3 V4
100 -(H) 25 /(L) 2 +(M) 1
Equation: (100 – 25) / (2 + 1)
Result: 25
Setting
Setting
Setting
Setting the
the
the
the Par
Par
Par
Par parameter
parameter
parameter
parameter
The following illustration shows the view in programming mode that corresponds to the first
example (12 + (6 / 3)) - 1:

Easy xLogic Specifications

General

Brand	Easy
Model	xLogic
Category	Control Unit
Language	English