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6
RFT9739 Rack-Mount Transmitter Instruction Manual
Getting Started
continued
Security modes
Switches 1, 2, and 3 are security switches, which enable the user to
disable flowmeter zeroing, disable resetting of totalizers, and write-
protect all configuration and calibration parameters.
Switch settings enable any of eight possible security modes. Different
modes determine which functions are disabled and whether
configuration and calibration parameters are write-protected. The
following functions can be disabled:
• Flowmeter zeroing using digital communications
• Flowmeter zeroing using the Scroll and Reset buttons
• Totalizer control, with flow, using digital communications
• Totalizer control, with flow, using the Scroll and Reset buttons
• Totalizer control, with zero flow, using digital communications
• Totalizer control, with zero flow, using the Scroll and Reset buttons
Table 2-1 lists the parameters that are write-protected and functions that
are disabled for each security mode. Security modes 1 through 7 are
entered immediately when switches are set.
For information about security mode 8, see pages 7 through 8.
Table 2-1. Security modes
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 7 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 button
Disabled
Disabled
Disabled
Disabled
Disabled
Disabled
Disabled
HART or
Modbus
Disabled
Disabled
Disabled
Disabled
Totalizer
control,
no flow
Scroll and
Reset buttons
Disabled
Disabled
Disabled
Disabled
HART or
Modbus
Disabled
Disabled
Disabled
Totalizer
control,
with flow
Scroll and
Reset buttons
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
Содержание Fisher Rosemount RFT9739
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