Specifications

Level One: Protege GX Installer Study Guide | August 2013 155
RDI2 & RDE2
The RDI2 and RDE2 reader expanders are intelligent reader expanders, and will continue to function as follows
in offline mode:
 The first 2000 users in the controllers database are stored in the reader expander's offline database and
will be granted access based on the their configured access levels.
 The last 2000 events will be stored while in offline mode and uploaded to the controller once online.
 Schedules will be followed while in offline mode.
 Doors that are unlocked by schedule will remain unlocked while in offline mode, until they are scheduled
to be locked again.
The reader expander's offline database can be configured to be updated once per day at a specified time.
When updated a copy of the currently programmed settings in the controller is sent to all connected intelligent
reader expanders.
Robust RS-485 Engineering
When engineering your system, a good system design will attempt to avoid situations where expanders are
forced into their offline mode.
ZX16 PX8
PSU Controller
* RS-485 Protected by Cabinet
RDM2 RDM2
If RS-485 standards are followed, the correct cable used and the cable is protected, the RS-485 module
network has an extremely low failure rate.
Expanders that are located in the same cabinet as the Controller are very unlikely to fail, and are therefore
considered to be a robust solution.