Rockwell Automation DeviceLogix System User Manual - Manual (Page 122)

122 Publication RA-UM003B-EN-P - February 2010
Chapter 5 Create Logic in the Old DeviceLogix Ladder Editor
Logic Enable Off
To cause the device to stop executing the logic configuration:
Click Communications > Logic Enable Off.
If the logic in the old Ladder Editor does not match the logic in the
device, the Logic Enable On and Logic Enable Off functions are
disabled (grayed out). You must verify the logic and download it to
the device for the Logic Enable On and Logic Enable Off functions to
be enabled.
Verify Logic
When you use the Verify Logic function, you test your configuration
for mistakes.
To verify your logic, click Tools > Logic Verify.
The following is verified during the logic verify process:
• Each rung has the minimum number of input and output
instructions
• Each branch has the minimum number of instructions
• Each parameter has the correct data type associated to it
• Latches have been correctly paired with reset instructions
• Outputs have only been used once
• Counters, timers, and latches have unique tag names
Once the Verify Logic process is complete, you see the results in the
pane on the bottom of the screen. If any of the checks fail the
verification process, an error message displays in the pane. Click the
error or warning line to cause the cursor to go to the place in the old
Ladder Editor where the error is in your logic. Your logic
configuration must pass the logic verification process before you can
download the logic to the DeviceLogix device.
Note that in the Message pane you see the amount of memory that is
available in the device. The amount of available memory displays only
if the logic passes verification.
TIP
Another way to verify logic is to click the verify logic icon
on the toolbar.