8
D
iagnosis and service
8
.
1
M
aintenance
I
f the device is used correctly
,
no maintenance is required in normal
operation
.
8
.
2
E
rror messages
HART
communication errors are signalled with numerical codes
1
-
7
.
A
n error message is sent if a transaction was not successful after
multiple attempts
.
A
n error message is only displayed if an error occurs due to a
transmitted command
,
this means only if the error is caused by an
adjustment of the user
.
E
rrors in the communication between control
system and sensor are detected but not displayed
.
T
he measured value line shows
"
E
rror
“,
the status line
"
HART
n
“
whereby
"
n
"
represents the numerical error code
.
T
he error message
is displayed up to the next key pressing
.
T
he following table shows the error codes and gives information on the
failure reason and removal
.
E
rror code
D
escription
C
ause
1
T
ransmitter does not answer
2
C
ommunication error
l
P
arity
,
checksum
,
package
length faulty during recep
-
tion
l
T
ransmitter signals receipt
error
3
C
ommand not implemented
C
ommand is not supported by
the transmitter
.
4
R
ange error
l
V
alue not within the range
supported by the sensor
l
R
equested measuring unit
is not supported
5
E
rror of the transmitter is not
speci
fi
ed in detail
S
ensor signals an error in the
status byte which was not
itemized
.
6
T
ime
-
out with bus access
B
us permanently occupied
7
N
ot supported measuring unit
VEGADIS
62
39
8
D
iagnosis and service
36469
-
EN
-
120329
