Rockwell Automation DeviceLogix System User Manual - Manual (Page 47)

Publication RA-UM003B-EN-P - February 2010 47
Navigate the Function Block Editor Interface Chapter 2
Fault State Conditions and Rules
Fault state conditions and rules are listed below.
Operation
Data Type Condition Output Fault
Code
Fault Option
= 1 Fault
Option = 2 Fault
Option = 3
DINT The result from
the operations
ADD, SUB or
MUL exceeds
the range of the
DINT data type Truncates Hold last
output Value of
instance
attribute
Fault State
value 3
(Any DINT) / 0 = Dividend 3
Input data from
the binding path
is out of range Use the
Truncates
input value 1
REAL (±) Infinity x (±)
Infinity (±) Infinity Hold last
output Value of
instance
attribute
Fault State
value 3
(±) Nonzero / 0 (±) Infinity 3
Infinity + Infinity Infinity 3
0 / 0 Infinity 3
Infinity - Infinity NAN 3
(±) Infinity / (±)
Infinity NAN 3
(±) Infinity x 0 NAN 3
Sqrt ((±) Infinity) Infinity 3
0 x x 0 NAN 3
In XPY
operation,
source A is
negative while
source B is not
an integer value NAN 3
NAN operand
for any
operation NAN 3
Input data from
the binding path
is out of range Use the
Truncates
input value 1