Operating Instructions

19
6 Access protection
VEGAPULS C 21 • Two-wire 4 … 20 mA/HART
58341-EN-191014
6 Access protection
6.1 Bluetooth radio interface
Devices with a Bluetooth radio interface are protected against un-
wanted access from outside. This means that only authorized persons
can receive measured and status values and change device settings
via this interface.
A Bluetooth access code is required to establish Bluetooth com-
munication via the adjustment tool (smartphone/tablet/notebook).
This code must be entered once when Bluetooth communication is
establishedforthersttimeintheoperatingdevice.Itisthenstoredin
the adjustment tool and does not have to be entered again.
The Bluetooth access code is individual for each device. It is printed
on the device housing and is also supplied with the device in the infor-
mation sheet "PINs and Codes". It can be changed by the user after
therstconnectionhasbeenestablished.IftheBluetoothaccess
code has not been entered correctly, a new entry can only be made
after a waiting period has elapsed. The waiting time increases with
each additional incorrect entry.
If the user has a "myVEGA" account, the Bluetooth access code is
additionally stored in his account under "PINs and Codes". This great-
lysimpliestheuseofadditionaladjustmenttools,asallBluetooth
access codes are automatically synchronized when connected to the
"myVEGA" account
The emergency Bluetooth unlock code enables Bluetooth communi-
cation to be established in the event that the Bluetooth access code
is no longer known. It can't be changed. The "Emergency Bluetooth
unlock code" can also be found in information sheet "Emergency
codes". If this document is lost, the emergency Bluetooth unlock code
can be retrieved from your VEGA contact person after legitimation.
The storage and transmission of Bluetooth access codes is always
encrypted (SHA 56 algorithm).
6.2 Protection of the parameterization
The settings (parameters) of the device can be protected against
unwanted changes. The device is not locked on delivery, all settings
can be made.
To protect the parameterization, the device can be locked by the user
with the aid of a freely selectable device code. The settings (param-
eters) can then only be read out, but not changed. The device code is
also stored in the adjustment tool. However, it must be re-entered for
each unlocking. When using the VEGA Tools app, the stored device
code is then suggested to the user for unlocking.
If the user has a "myVEGA" account, the device code is additionally
stored in his account under "PINs and Codes
".Thisgreatlysimplies
the setup of additional operating devices, as all device codes are au-
tomatically synchronized when connected to the "myVEGA" account.
Bluetooth access code
Emergency Bluetooth
unlock code
Device code