Varying the SL4000 Offline
Vary SL4000 components offline to ACSLS before they are powered off, if they are inoperative, and before you open an SL4000 access door. This notifies ACSLS that they are unavailable. Once they are available, vary them back online.
Use ACSLS to Vary SL4000 Components Offline, not SL4000 GUI
Be sure to vary SL4000 components (ACSs, LSMs, and CAPs) offline to ACSLS, not the SL4000 GUI. ACSLS allows outstanding requests to complete before taking components offline, unless it is a vary offline force.
The SL4000 GUI has no knowledge of outstanding requests to ACSLS. Varying components offline using the SL4000 GUI may cause requests in progress to fail.
When to Vary SL4000 Components Offline to ACSLS
This section describes when to vary components offline to ACSLS.
Before Opening the Access Door
Before opening the SL4000 access door, issue the following command to vary the ACS offline:
vary acs acs_id offline
Note:
If any CAPs in the SL4000 are in automatic mode, you must:- Set the CAPs to manual mode before opening the access door.
- Set the CAPs back to automatic mode after you close the access door and the SL4000 comes back online.