Device Description HG G-71450/1/3/5-A | English, Revision 02 | Date: 06.06.2019
67
Troubleshooting – Chapter 12
12
Troubleshooting
Below you can find a list of possible errors in table form. A description of the symp
-
toms that occur is given for each error. In the third column you can find instructions
on how to narrow down the error and, ideally, how to correct it.
If you are unable to solve an error, please use the table to narrow it down as precisely
as possible (type of malfunction, time of occurrence) before contacting us.
Table 74
Troubleshooting (part 1 of 2)
Error
Possible cause(s)
Possible Diagnosis/Remedy
No system function
No serial output despite a
transponder in the detec
-
tion range
Operating voltage too low
Measure the voltage at the corre
-
sponding terminals in the terminal
box
No contact possible; incom
-
prehensible characters are
sent
1.
RxD and TxD or D+, D- lines
reversed
2.
Signal ground not connected
3.
Incorrect transmission parame
-
ters set
1.
Check the corresponding con
-
nections
2.
Connect the signal ground
3.
Select 38.400 baud (see note),
8 bit, parity even
Note on the baud rate:
–
For the antenna HG G
-
71450
the baud rate depends on the
position of the DIP switches,
see Table 19 on page 29
–
For the antenna HG G-71455
the baud rate is arbitrary select
-
able, because it has a virtual
port
