Rockwell Automation Publication 1756-RM003N-EN-P - October 2011 93
Bit Instructions (XIC, XIO, OTE, OTL, OTU, ONS, OSR, OSF, OSRI, OSFI) Chapter 2
Examine If Open (XIO)
The XIO instruction examines the data bit to see if it is cleared.
Operands:
Relay Ladder
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
for information on the syntax of constructs within
structured text.
Description: The XIO instruction examines the data bit to see if it is cleared.
Arithmetic Status Flags: Not affected
Fault Conditions: None
Operand Type Format Description
Data bit BOOL Tag Bit to be tested
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