Rockwell Automation PLC-5 Fieldbus Solutions for Integrated Architecture User Manual - Manual (Page 194)

Publication 1757-UM006A-EN-P - May 2002
A-14 Standard Function Block Parameters
Table A.37 DV_LO_LIM
Table A.38 DV_LO_PRI
Exxx Blocks No E parameters
Fxxx Blocks Table A.39 FAIL_SAFE
Classification Simple Variable
Description Defines the low deviation alarm limit setting in engineering units.
FF Data Type Float
Range – infinity, - PV Span to 0,
Usage C/Contained
Length 4
Valid Views VIEW_4
Storage Static
Remarks Initial value is – infinity
Classification Simple Variable
Description Defines priority of the low deviation alarm.
FF Data Type Unsigned 8
Range 0 to 63
Usage C/Alert Priority
Length 1
Valid Views VIEW_4
Storage Static
Remarks Initial value is 0
Classification Simple Variable
Description Condition set by lost of communication to an output block, failure promoted to
an output block or a physical contact. When the failsafe action is active, the
output function blocks will perform their FSAFE action
FF Data Type Unsigned 8
Range 1: Clear
2: Active
Usage C/Contained
Length 1