Analog Math Error Detection - Rievtech xLogic ELC Series User Manual

2 +(L)
Equation: 2+ (3*(1+4))
Result: 17
V1 Operator1
100 -(H)
Equation: (100 – 25) / (2 + 1)
Result: 25

5.5.31 Analog math error detection

Fashion:
Short Description
The analog math error detection block sets an output if an error has occurred in the referenced analog
math function block.
Connection
Input EN
Input R
Parameter
Output AQ
Parameter Referenced FB
The value for the Referenced FB parameter references the block number of an already-programmed
analog math function block.
Description of the function
The analog math error detection block sets the output when the referenced analog math function block
has an error. You can program the function to set the output on a zero division error, an overflow error,
or when either type of error occurs.
If you select the automatically reset check box, the output is reset prior to the next execution of the
function block. If not, the output retains its state until the analog math error detection block is reset with
the R parameter.
In any scan cycle, if the referenced analog math function block executes before the analog math error
detection function block, the error is detected in the same scan cycle. if the referenced analog math
149
3 *(M)
V2 Operator2
25 /(L)
Classic:
Description
Enable the analog math error detection function block.
Reset the output
Referenced FB: block number of an analog math instruction
Error to detect: Zero division, Overflow, or Zero division OR Overflow.
Auto Reset: Reset the output when the failure condition clears.
Q is set high if the error to detect occurred in the last execution of the
referenced analog math function block.
1 +(H)
V3 Operator3
2 +(M)
4
V4
1