Logix
®
520MD+ and 510+ Digital Positioners FCD LGENIM0105-15-AQ – 05/16
50
a
CAUTION: Observe precautions for handling electrostatically
sensitive devices.
3. With a clean, non-conductive instrument, change the position
of DIP switch according to Figure 41: HART DIP Switch. After
changing the DIP switch, the positioner will immediately
recognize the new HART communication protocol.
4. Replace the covers.
Figure 41: HART DIP Switch
11.4 Burst Mode
Burst Mode is available with a handheld device. In the handheld, se-
lect the Burst Mode feature under the Configuration Menu. Variables
that are transmitted in burst mode are shown in the table below.
Table 21: Default HART Parameters for Burst Mode
HART Variable Data Description
Primary 4-20 Command (%)
Secondary Final Command (%)
Tertiary
Purchased with Standard Diagnostics:
Temperature (C)
Purchased with Advanced or Pro Diagnostics:
Supply Pressure (bar)
Quaternary Valve Position (%)
NOTE: These variable assignments are reestablished during a
factory reset. A field upgrade will not change the tertiary variable.
NOTE: The DTM will not function while the positioner is in Burst
Mode.
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