Examine If Open (Xio); Relay Ladder; Structured Text - Allen-Bradley Logix5000 Reference Manual

Examine If Open (XIO)

Description:
Arithmetic Status Flags:
Fault Conditions:
The XIO instruction examines the data bit to see if it is cleared.
Operands:

Relay Ladder

Operand
Data bit

Structured Text

Structured text does not have an XIO instruction, but you can achieve the same
results by using an IF...THEN construct.
IF NOT data_bit THEN
<statement>;
END_IF;
See Function Block Attributes
structured text.
The XIO instruction examines the data bit to see if it is cleared.
Not affected
None
Rockwell Automation Publication 1756-RM003N-EN-P - October 2011
Bit Instructions (XIC, XIO, OTE, OTL, OTU, ONS, OSR, OSF, OSRI, OSFI)
Type Format
BOOL Tag
for information on the syntax of constructs within
Description
Bit to be tested
Chapter 2
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