Specifications

Level One: Protege GX Installer Study Guide | August 2013 153
Offline Behavior
Input Expanders
When RS-485 communications are lost, input expanders continue to process the states of inputs, however it is
the Controller that is responsible for carrying out any actions required such as triggering sirens or off site
monitoring.
 Input expanders do not store events, so if an input opens and closes while the expander is offline, it will
never be logged or actioned.
 If an input changes state while offline and remains in the new state, it will be logged and actioned when the
expander comes back online.
Because the input state is still processed, LED operation will continue to follow the state of the input while it is
offline.
Output Expanders
When RS-485 communications are lost, output expanders will keep all outputs in the same state they were last
in.
 If an output was supposed to change state for any reason, it will not happen while the module is offline.
 When the module comes back online, the Controller updates the expected states of all the outputs.
Reader Expanders
All Protege reader expanders have three programmable modes of operation which they will follow if
communications to the Controller are lost.
1. No Users (Entry is denied for everyone)
2. Any card (Entry is granted for any card that can be read)
3. First 10 users + Cache (The first 10 programmed users and a number of stored users will be allowed
access)
Offline Operation
No Users
The No Users mode of offline operation should only be used for perimeter and high security doors.
 In this mode of operation, all card and / or PIN access attempts will be denied.
 REX or request to exit will be granted, and an offline warning of four short beeps will be emitted from any
readers attached to the door.
 If this mode is selected, it is critical that another means of entry to the area is provided. This could be
through an alternative door, via a key override switch or an emergency break glass switch.