Advanced settings
General Instruction Manual
System configuration and operation
IM 01U10B00-00EN-R, 3rd edition, 2018-07-09
75 / 90
9.4 Advanced settings
DANGER
Explosion hazard
▶
When the housing is opened in hazardous areas, the applicable Explosion Proof
Type Manual must be observed, see chapter Operation, maintenance and repair.
9.4.1 Setting hardware write-protection
The flow meter can be protected from unauthorized access. If the software write-protec-
tion via password is not adequate, an additional hardware write-protection can be set on
the main board of the transmitter. With the write-protection active, the transmitter display
can still be operated, any changes to settings or parameters are not saved and therefore
not effective.
Write-protection can also be activated without removing the display. To do this, remove
the jumper from the write-protection terminal (see
Connection terminals [
}
51]
).
It is not possible to release the hardware write-protection via HART, Modbus or other
communication software.
1. Switch off power supply.
2. Loosen the locking screw by turning it clockwise with an Allen wrench (size: 3.0).
3. Unscrew display cover from transmitter housing.
