turck BL20 Series - Page 200

Analog Input Modules
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Diagnostics
This module has the following diagnostic data per channel:
Byte B7 B6 B5 B4 B3 B2 B1 B0
Channel 1
0 hard-
ware
error
Invalid
Parame-
ters
HART
comm.
error
HART
status
error
Measured
value
under-
range
over-
current
Wire
break
Measured
value over-
range
1 -
Channel 2
2 hard-
ware
error
Invalid
parame-
ter
HART
comm.
error
HART
status
error
Measured
value
under-
range
over-
current
Wire
break
Measured
value over-
range
3
-
Diagnostics Meaning
Measured value overrange The measurement value exceeds the value ranges and the device
is not able to capture these values.
Wire break Displays an open circuit in the signal line.
Overcurrent Displays a short circuit in the signal line.
Measured value underrange The measurement value is below the value ranges and the device
is not able to capture these values.
HART status error The connected HART-device set a bit in the HART status-informa-
tion (”status - polling”).
HART communication error The channel does not allow communication with the HART-device.
Invalid parameter Possible sources:
Setting of a reserved parameter bit
Module behavior:
Input value = 0 mA
The return value of the HART-variable in the process data is 0×0000
0000.
Hardware error Shows common errors of the module hardware. The return analog
value in case of an error is ”0”.
NOTE
If an error message from the sensor occurs, the HART-status is set to ”1”.