User's Manual

7ML19985FH04 SITRANS LR 400 – INSTRUCTION MANUAL Page 56
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Parameters (HART)
4.4 Digital Output
4.4.1: Function DO (F = Alarm)
Assignment of the digital output
Here you can select whether the digital output supplies the upper or lower limit value of
level or volume or an alarm (device error, measurement error; see Parameter 3.1) to the
control system. If you select the
No function option, the digital output is switched off.
Selection of a limit value enables Parameter 4.4.4. If you select Alarm or No function in
this parameter, Parameter 4.4.4 will not be visible.
4.4.2: Error Level (F = D: Error Signal)
Level for the error signal to alarm in Analog or Digital output
When D is selected, all errors are displayed. When D+F is selected, there is special
handling for failsafe. When D+F+W is selected, there is special handling for warnings.
4.4.3: Signal Type DO (F = Relay closes)
Value
MaxLim level
MinLim level
MaxLim volume
MinLim volume
MaxLim mass
MinLim mass
Alarm
No function
Note: The value of Parameter 4.4.4 is determined by the MaxLim or MinLim selection
chosen in 4.4.1 (Function DO).
Value
D: Error signal
D+F: Error signal
D+F+W: Error signal
Value
Relay closes
Relay opens