Pepperl+Fuchs KFD HM 16 Series Manual page 55

HART Multiplexer System KFD*-HM*-16
Diagnosis and fault elimination
8.3.3 Device status (structure of the second byte)
Bit Description
Error function of the field
device (malfunction)
7
Configuration changed
6
(Configuration changed)
Start-up sequence is running
5
Extended device status
4 available
analog output current fixed
(primary variable)
3
analog output current has
2 reached its limit (primary
variable)
Variables (not the primary one)
outside the range
1
Primary variable outside the
0 range
If a communication error is indicated in the first byte (Bit 7 = 1), the second byte
described here has no significance (always 0).
In the other case, it contains the status of the field device in full, i.e. independent of
commands.
The individual bits have the following meaning:
Meaning
Hardware fault. The extended device
status may provide further
information (see section 8.4).
A write command has been executed.
The power supply has been
connected or a reset has been
activated. Transient data are reset to
the preset values.
Further status messages are
available and can be called up, see
section 8.4.
The primary variable is fixed at the
requested value and no longer
follows the process.
The primary variable lies outside its
limit value and therefore no longer
corresponds to the process value.
The values detected by the sensor
(not for the primary variable) lie
outside the operating range. The
extended device status may yield
additional information (see
section 8.4).
The measured value detected by the
sensor lies outside the operating
range.
Corrective action
• Read extended device status
(section 8.4).
• Check LEDs (section 8.2).
• Re-parameterize device.
This bit can be cleared by
command 38.
Wait for the start-up sequence,
then parameterize the device.
Read extended device status
(section 8.4).
always 1
(has no function on the
Multiplexer, since there is no
analog output)
always 0
(has no function on the
Multiplexer)
always 0
(has no function on the
Multiplexer)
always 0
(has no function on the
Multiplexer)
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