Rockwell Automation DeviceLogix System User Manual - Manual (Page 87)

Publication RA-UM003B-EN-P - February 2010 87
Bind Function Blocks with I/O Chapter 3
Enable and Disable Logic
Logic Enable On
Use the Logic Enable On function to notify the device to start
processing the stored logic diagram. To set Logic Enable On, select
Communications > Logic Enable On.
Logic Enable Off
Use the Logic Enable Off option to notify the device to stop executing
the logic diagram. When you select this option, the device enters an
idle state, turning off the Logic Enable Bit in the produced data. The
Logic Enable bit in the Produced I/O assembly of the device reflects a
0 or 1 for Logic Enable Off or Logic Enable On. To set Logic Enable
Off, select Communications > Logic Enable Off.
Verify Logic
To verify the logic’s syntax, click the Verify icon in the standard
toolbar or Tools > Verify. The verify results will be displayed in the
message log window. If an error is identified, double-click the error
message to have the current caret jump to the error block.
TIP
You can only download the logic to the device after verifying
and passing the verification without an error.
TIP
For devices running firmware revision 3, each instruction’s
instance ID number is assigned and valid only after verification.
This number may change if the placement of the instruction
changed.
For devices running firmware revision 4 or higher, each
instruction’s instance ID number is assigned once and will
never change.