Rockwell Automation DeviceLogix System User Manual - Manual (Page 51)

Publication RA-UM003B-EN-P - February 2010 51
Navigate the Function Block Editor Interface Chapter 2
The Enable Line feature can have two data sources:
• If an input uses Enable Line to bind with an input point or other
function block’s output, the input retains this point’s data value.
• If an input uses Enable Line in an unbound capacity, the input
uses the default constant value (which you can set on each
instruction’s property page).
TIP
The EDS file for a device must explicitly specify support for this
functionality to be available. If a device’s EDS file does not
support this feature, this functionality will not be available.