Interflex IF-4735, Техническое руководство

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4 System Overview
After receiving the data, the host system evaluates it and reacts depending on the data received. For
booking data, the IF-60x0 system sends back a positive or negative booking response, for example.
Depending on the booking response, access is either permitted or denied.
The IF-60x0 system can also actuate relays or trigger an alarm if certain events occur. All booking data
and events of the connected terminals are stored in the memory of the
IF-4735 device.
Offline mode
If there is no transfer of data between the IF-4735 device and the parent host system (e.g. the IF-60x0
system), the device will automatically switch to offline mode. There, it records all bookings and events
and autonomously makes decisions based on configured conditions.
In the event of a positive decision, a booking response and/or a signal for activating an output relay, for
example, are transmitted to the booking location. If the decision is negative, the reason for the booking
rejection is transmitted.
All bookings and status changes recorded in offline mode are stored in the device, together with a special
remark. The
IF-4735 device transmits this data to the parent host system once an online connection has
been established again.
2.4 Encryption of data transfer
Transmission, credential <-> reader/terminal
The transmission of data between the credential and the reader/terminal is subject to requirements which
are constantly changing. Interflex is always always up-to-date in supporting the current credential and
reader technologies.
Transmission, reader/terminal <-> controller
The data transmission between terminal and controller takes place via an RS485 two-wire line, which is
installed in the secured area. You can encrypt the data transmission, by using the terminal controllers of
the IF-4xxx series, the master terminals of the IF-5xxx series and the slave terminals of the IF-8xx series.
The controllers are equipped with up to 3 bus systems that can be used to connect several slave
terminals. Data encryption can be activated or deactivated for each connected slave terminal individually.
You can configure this setting when starting up the controller. Mixed operation of encrypted and
non-encrypted transmission on the same bus is possible.
For this purpose, the devices must be equipped with a minimum software version:
▪
Controller: Version V7.13.05 or higher.
▪
IF-8xx slave terminals: Version 7.ba or higher.
Transmission, controller <-> host system
You can activate and deactivate the encryption for this data link in the host system. You will find details in
the documentation of the host system.
See also
Setting interfaces, booking memory and encryption .............................................................. 13