28
Connector Unit MA 30 / MA 31
Leuze electronic
Appendix
Leuze
electronic
5
Appendix
5.1
Troubleshooting
Troubleshooting
If problems should occur during commissioning of the MA 30/31, you can
refer to the following table. Typical errors and their possible causes are
described here as well as tips for their elimination.
No
.
Error description
Possible cause(s)
Remedy
Start-up:
1
No LED illuminates,
BCL xx on the MA 30
does not start
Incorrect polarity or
improper connection of
operating voltage
Check and correct connec-
tion
2
LED RDY flashes for
longer than 30s after
start-up
"Power-On" function test
could not be carried out
successfully
Test the network wiring;
switch the operating volt-
age on and off
3
Network master
(Addr. "00") does not
respond to host
No communication
between host and master:
1.
Incorrect interface
type plugged in
2.
Interface incorrectly
connected
3.
Incompatible data for-
mat between host and
MA 30/31
4.
DIP switch 3
set to
"Service"
1.
Replace the interface
module
2.
Correct according to
the connection dia-
gram
3.
Check the data format
and change in the
master setup
4.
Set
DIP switch 3
to
"Host"
4
Master responds with
"00S", the connected
slaves do not respond
1.
Last slave address
not set on the
MA 30/31
2.
DIP switch 4
set to
ON
1.
Set
Last Slave
Address
with control
knob or Master setup,
after which a new
start has to be per-
formed, either by
Online command ’H’
or by voltage off -> on.
2.
Set
DIP switch 4
to
OFF
5
Master responds with
"00S", all connected
slaves respond with
time out (e.g. "01T,
02T, 03T etc.)
1.
Interruption or polar-
ity reversal of the
multiNet plus interface
(RS 485)
2.
The slaves have not
recognised the "multi-
Net" protocol type and
are operating with a
different data format
1.
Test and correct the
connection; wires A
and B must not be
interchanged
2.
Test and correct set-
tings for the host pro-
tocol of the slaves at
the service interface:
data format:
multiNetMode
baud rate:
57600
protocol:
multiNet plus Slave
Summary of Contents for multiNet plus Master MA 30
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