Rockwell Automation Guardmaster 440R-ENETR, User Manual

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Rockwell Automation Publication 440R-UM009C-EN-P - July 2019 65
Chapter
8
Studio 5000 Example Logix Code
GuardLink Commands
This chapter shows sample code for GuardLink commands.
Lock and Unlock
Figure 49 shows sample code to lock and unlock guard locking switches. Rung 9
uses an HMI input to unlock all switches in the GuardLink circuit. First, we
move a zero into the LockCmd to clear out any previous lock commands. Then,
we move a -1 into the UnlockCmd. The -1 is converted to a 1 for each tap.
Rung 10 uses an HMI input to lock all switches in the GuardLink circuit. First,
we move a zero into the UnlockCmd to clear out any previous unlock commands.
Then, we move a -1 into the LockCmd. The -1 is converted to a 1 for each tap.
Rungs 11 and 12 provide an example of unlocking and locking a specific switch.
In this case, we move a 4, which is the third tap, instead of a -1.
Figure 49 - Unlock and Lock Commands