Endress+Hauser Proline Promag 300 - Page 148

Description of device parameters Proline Promag 300 Modbus RS485
148 Endress+Hauser
Additional information Selection
• Forward flow
Positive flow is output, negative flow is not output.
• Forward/Reverse
Positive and negative flow are output (absolute value), but a distinction is not made
between positive and negative flow.
• Reverse flow
Negative flow is output, positive flow is not output.
• Rev. flow comp.
The flow components outside the span are buffered, balanced and output after a
maximum delay of 60 s.
For a detailed description of the options available, see the Measuring mode
parameter (→  110)
Examples
For a detailed description of the configuration examples, see the Measuring mode
parameter (→  110)
Failure mode 
Navigation  Expert → Output → Double pulse out → Failure mode (0985)
Description Use this function to select the failure mode of the double pulse output in the event of a
device alarm.
Selection • Actual value
• No pulses
Factory setting No pulses
Additional information Description
The dictates of safety render it advisable to ensure that the double pulse output shows a
predefined behavior in the event of a device alarm.
Selection
• Actual value
In the event of a device alarm, the double pulse output continues on the basis of the
current flow measurement. The fault is ignored.
• No pulses
In the event of a device alarm, the double pulse output is "switched off".
NOTICE! A device alarm is a measuring device error that must be taken seriously. It can
affect the measurement quality such that the quality can no longer be guaranteed. The
Actual value option is only recommended if it can be guaranteed that all possible alarm
conditions will not affect the measurement quality.