43
Endress+Hauser
HART Loop Converter HMX50
• LOOP Poll
The isolated barrier performs the field device query using the HART command 3.
• LOOP Burst
The isolated barrier receives the HART command 3 of the field device.
• LOOP Mixed
The isolated barrier performs the field device query using the HART command 3 (polling).
The field device is in burst mode, however it references a different HART command than
3.
In the event of a fault, the display shows:
• Err Device Fault
Displays a device fault in the isolated barrier – red LED lights up.
• Err Communication
Displays a communication fault – red LED flashes.
• Err Field Device Malfunction
Displays a field device failure – red LED flashes.
Display Options for Current Output Values and HART Variables
• To select the displayed measured values or current output values, use the
▴ and ▾
buttons.
• To select units for measured values, use the Unit menu. See chapter 3.4.5.
• Every time the isolated barrier receives a HART command 3 message from the field
device, the display is updated.
• The isolated barrier displays the current output values as a four-digit number. The
decimal point is set to provide the best possible resolution.
• The isolated barrier shows the floating point value for HART variables as follows:
• If possible, as a four-digit number with decimal point and without exponent.
Negative values are shown on the device with three digits because of the minus sign.
• A digit is rounded as necessary. For example, the number 0.3456 is shown as 0.346.
• If the isolated barrier cannot show the floating point value, the mantissa and exponent
are shown in alternation.
BA00371FEN_1417.fm Page 43 Tuesday, August 15, 2017 4:08 PM
To Next Page
Loading...
