Security Considerations; Measurement Options Licensing - Honeywell SmartLine SLG 700 User Manual

1.8 Security Considerations

The SLG 700 provides several features designed to prevent accidental changes to the device
configuration or calibration data. These features include a local display password (HART
option), a communication password (HART option), a Hardware Write Protect Jumper and a
Software Write Protect configuration parameter. These features can be used in combination to
provide multiple layers of change protection.
For both the local display and communication passwords, the initial user passwords are
defined as "0000". A "0000" password indicates that the user has not set a user- defined
password and the password protection is disabled. The password used on the local keyboard
display is separate from the password provided for communication. Password protection from
the local keyboard display does not inhibit changes by way of communication over the current
loop. A master password is available that allows recovery if the set user password is unknown.
A hardware write-protect locks out changes regardless of the entry of a password. The
hardware jumper requires physical access to the device as well as partial disassembly and
should not be modified where the electronics are exposed to harsh conditions or where unsafe
conditions exist. For configuration or calibration changes without changing the hardware
jumper position the user may choose to rely on the password and software lockout features.
A tamper mode feature (see SLG 700 SmartLine Guided Wave Radar Level Transmitter HART
Option Manual, Document #34-SL-25-06) is available that can indicate that an attempt was
made to change either the configuration or calibration of the device (whether or not a change
was actually made). These security features are designed to avoid accidental changes and to
provide a means to detect if an attempt was made to change the configuration and calibration.
Note: FF does not support tamper mode.

1.9 Measurement Options Licensing

As of software revision R200, the sensor checks whether the user has a license required to
operate the device in a particular measurement mode (see also 2.5 for the various
measurement modes). Licenses are required to measure two-liquid interfaces, use the low
DC measurement mode and for steam applications. Any sensor ordered for these application
will have a valid license key stored in the transmitter and no user action is required.
The license key depends on the device ID which can be checked using the display (see
Table 4-8 or DTM. It is possible to obtain new license keys for application types other than
which the gauge was originally bought for by supplying the device ID to Honeywell and
entering the newly obtained license key.
Gauges that were installed prior to R200 do not lose access to the interface measurement
when they are upgraded to the new software - the sensor will internally generate a license key
for this application after the first startup and store it in memory.
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SLG 700 SmartLine Level Transmitter User's Manual
Revision 8