Options for HART variables
(continued)
Table 6-7:
Process variable
Primary Varia-
ble (PV)
Secondary
Variable (SV)
Third Variable
(TV)
Fourth Varia-
ble (QV )
Referred Density (Concentration)
✓
✓
✓
✓
(1) CDM mA and CDM DO devices only. Not supported for CDM TPS devices.
Interaction of HART variables and transmitter outputs
The HART variables are automatically reported through specific transmitter outputs. They
may also be reported through HART burst mode, if enabled on your transmitter.
Restriction
One some devices, the PV and the primary mA output are fixed to a specific process variable and
cannot be changed.
HART variables and transmitter outputs
Table 6-8:
HART variable
Reported via
Comments
Primary Variable (PV)
Primary mA output
If one assignment is changed, the other is changed auto-
matically, and vice versa.
Secondary Variable (SV)
Secondary mA output, if
present on your transmitter
If you have a secondary mA output: If one assignment is
changed, the other is changed automatically.
If you do not have a secondary mA output: The SV must be
configured directly, and the value of the SV is available on-
ly via digital communications.
Tertiary Variable (TV)
Not associated with an out-
put
The TV must be configured directly, and the value of the
TV is available only via digital communications.
Quaternary Variable (QV)
Not associated with an out-
put
The QV must be configured directly, and the value of the
QV is available only via digital communications.
6.5.3
Configure burst communications
Burst mode
is a mode of communication during which the transmitter regularly broadcasts
HART digital information to the network via the primary mA output.
Restriction
Burst communications, including trigger mode and event notification, is not available on HART/
RS-485. These features are supported only on HART/Bell 202.
•
•
•
Configure HART event notification
Integrate the meter with the control system
Configuration and Use Manual
97
Summary of Contents for CDM100M
Page 8: ...Getting Started 2 Micro Motion Compact Density Meters CDM ...
Page 12: ...Before you begin 6 Micro Motion Compact Density Meters CDM ...
Page 20: ...Configuration and commissioning 14 Micro Motion Compact Density Meters CDM ...
Page 26: ...Introduction to configuration and commissioning 20 Micro Motion Compact Density Meters CDM ...
Page 110: ...Integrate the meter with the control system 104 Micro Motion Compact Density Meters CDM ...
Page 116: ...Operations maintenance and troubleshooting 110 Micro Motion Compact Density Meters CDM ...
Page 124: ...Transmitter operation 118 Micro Motion Compact Density Meters CDM ...
Page 194: ...Using the transmitter display 188 Micro Motion Compact Density Meters CDM ...
Page 208: ...Using ProLink III with the transmitter 202 Micro Motion Compact Density Meters CDM ...