Panametrics Sentinel LCT, User Manual

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Chapter 7. HART Communications
182 Sentinel LNG User’s Manual
7.9.1.1 Command 34 and 55 Damping Value
The variable damping value is fixed and not programmable.
7.9.1.2 Command 35 Units Restriction
Command 35 does not allow range to be set with units other than the current publishing units. If the units do not
match the selected Primary Variable units, the response "Invalid Selection" is returned. The meter does not provide
the capability to convert values between units in Command 35.
7.9.1.3 Command 41 Perform Self Test
Due to the complex nature of the SEN898SEN898 meter, the self-test mode is Restricted. However, the device status is
constantly monitored and Command 48, Read Additional Device Status, should be used to determine the current
state of the meter.
7.9.1.4 Command 43 Set Primary Variable Zero
Only the Totals variable can be set to Zero with this command. Any other variable that is not a Forward or Reverse
Total will return Invalid Selection.
7.9.1.5 Command 72 Squawk Command
The Squawk function, command 72, causes the LCD backlight to flash.
7.9.1.6 Command 52 Set Device Variable Zero
This is the same as the Device Specific command 181: Clear Totals, if the variable specified is a Totals variable. Any
totals variable specified with this command will affect all totals variables. This command does not affect variables
that are not a Totals variable. Invalid selection is returned for non-totals variables.
7.9.2 Burst Mode Commands
The Sentinel LNG does not support burst mode.
7.9.3 Catch Device Variable Command
The Sentinel LNG does not support the catch device variable mechanism.