Instruction manual

6 RFT9739 Field-Mount Transmitter Instruction Manual
Getting Started
continued
Table 2-1. Security modes
Security mode 8
When transmitter security is set for mode 8, the transmitter meets
security requirements for custody transfer described in National Institute
of Standards and Technology (NIST) Handbook 44.
Once the transmitter is configured for security mode 8, the security
mode cannot be changed unless a master reset is performed. A master
reset causes all configuration parameters to return to their default
values, and
requires complete characterization and reconfiguration
of the transmitter.
If the user attempts to enter a new security mode or change the
transmitter configuration after entering security mode 8:
• Internal totalizers stop counting
• The frequency/pulse output goes to 0 Hz
• mA outputs go to 4 mA
• The optional display reads, "SECURITY BREACH; SENSOR OK"
• Custody transfer event registers record changes made to defined
configuration and calibration parameters. (For a list of these
parameters, see
Table 6-2
, page 56.)
The security breach continues, and totalizers and outputs remain
inactive, until the transmitter is reconfigured for security mode 8, or until
a master reset has been performed. Custody transfer event registers are
not affected by a master reset.
• For information about event registers, see
Section 6.3
, page 56.
• To perform a master reset, see instructions in
Section 7.7
, page 74.
Switch settings
Mode
1
Mode
2
Mode
3
Mode
4
Mode
5
Mode
6
Mode
7
Mode
8*
*Changing the settings of switches 1, 2, and 3 does not immediately implement security mode 8. For more information about
security mode 8, see pages 6 through 8.
Switch 1
Switch 2
Switch 3
OFF
OFF
OFF
OFF
OFF
ON
OFF
ON
OFF
OFF
ON
ON
ON
OFF
OFF
ON
OFF
ON
ON
ON
OFF
ON
ON
ON
Function/
parameter
Performed
with
Mode
1
Mode
2
Mode
3
Mode
4
Mode
5
Mode
6
Mode
7
Mode
8
Flowmeter
zeroing
Zero button or
Reset knob
Disabled Disabled Disabled Disabled Disabled Disabled Disabled
HART or
Modbus
Disabled Disabled Disabled Disabled
To t a l i z e r
control,
no flow
Scroll and
Reset knobs
Disabled Disabled Disabled Disabled
HART or
Modbus
Disabled Disabled Disabled
To t a l i z e r
control,
with flow
Scroll and
Reset knobs
Disabled Disabled Disabled Disabled Disabled Disabled Disabled
HART or
Modbus
Disabled Disabled Disabled Disabled Disabled Disabled
Configuration and
calibration parameters
Write-
protected
Write-
protected
Write-
protected
Write-
protected
Write-
protected
Write-
protected