Rockwell-automation DeviceLogix System User Manual Bedienungsanleitung PDF herunterladen (Seite 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

(Any DINT) / 0 = Dividend 3

Input data from

the binding path

is out of range

Use the

Truncates

input value

REAL (±) Infinity x (±)

Infinity

(±) Infinity Hold last

output

Value of

instance

attribute

Fault State

value

(±) 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

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