Trouble Shooting
English, Revision 06, Date: 14.12.2016
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Trouble Shooting
The following list contains a list of errors that might occur. For each error, a symptom
description is given. In the third column you will find a description how to locate and
possibly correct the error.
If you should not be able to correct an error occurred, please use the table how to lo-
cate the source of the error as exactly as possible (nature of malfunction, at which
point in time did the error occur, etc.) before consulting us.
Error
Possible Cause(s)
DIAGNOSIS / CORRECTION
No system function
no serial output even
though a transponder is
located within reception
range
Power supply is not sufficient
Measure the voltage at the respec-
tively labeled clamps in the clamp-
ing case
No contact is possible;
only unintelligible char-
acters are sent.
1. RS 422 T+(R+) and RS 422 T-
(R-) exchanged accidentally
2. Ground not connected, poten-
tial difference too high between
antenna and receptor
3. Incorrect setting of transfer
parameters
4. Incorrect transfer procedure
selected
1. Check the corresponding con-
nections
2. Connect signal shielding
3. Select only 9600 or 19200 Baud,
8 Bit, even parity
4. Select the correct procedure,
etc. with the PC and the system
monitor program
Inaccurate values at low
temperautres
1. System only works accurate as
when heating period is over
2. Heating not sufficient, cabling
loose
1. Wait until the system is heated
up (about 60 minutes at -20
o
C).
2. Measure voltage of 24V on the
corresponding clamp (+24V
Heating).
Output values are not
reproducible; lack of
accuracy
Interferences
Check the value S in monitor mode.
If it is over approx. 50, there could
be interferences in the range
62 kHz.
No positioning pulse.
1. Transponder defect
2. Loose cable connections
3. Interferences
4. Antenna defect
Check the transponder (e.g. with
the hand-held reader)
Table 18
Trouble shooting
