Rockwell Automation DeviceLogix System User Manual - Manual (Page 70)

70 Publication RA-UM003B-EN-P - February 2010
Chapter 3 Bind Function Blocks with I/O
• A green circle indicates that the connection is valid.
• A red circle indicates that the connection is invalid.
Determine the status of a
connection Once a connection is made, you can use the Negate and Assume Data
Available options to determine the state of that connection.
Negate Data
The Negate function causes the status of the data to be negated before
it enters the function block. The negate operation cannot be used for
analog types.
TIP
Using the Negate option does not require the use of one of the
available function blocks (as would a Not function block) .