Diagnostics And Troubleshooting; General Causes Of Errors - Leuze electronic MA 204i Technical Description

13

Diagnostics and troubleshooting

If problems should occur during commissioning of the MA
table. Typical errors and their possible causes are described here as well as tips for their
elimination.
13.1

General causes of errors

Error
Data loss
(DL bit)
Data in the RS 232
instead of in the
buffer
PWR status LED on the circuit board
Off
Green/orange,
flashing
Continuous orange
light
COM LED on the housing (see figure 8.1 on page 34)
Red continuous light
PWR LED on the housing (see figure 8.1 on page 34)
Off
Red continuous light Device error.
Green, flashing
Red, flashing
Red continuous light Device error.
Table 13.1:
Leuze electronic
Possible error cause
Data telegram longer than the bus
telegram in bus cycle/memory size.
Incorrect order.
No supply voltage connected to the device. Check supply voltage.
Hardware error.
Device in boot mode.
Device error.
Firmware update failed.
Communication error on the PROFIBUS: No
communication to controller established
("no data exchange").
No supply voltage connected to the device. Check supply voltage.
Device not yet recognized by the
PROFIBUS.
SERVICE active.
Incorrect baud rate / address:
Address >126: no communication
General causes of errors
MA
Diagnostics and troubleshooting
204i
Increase in bus telegram length.
Toggle out data earlier.
Correct order:
Provide data, toggle CTB.
Send the device to customer service.
No valid firmware, send device to
customer service.
Send the device to customer service.
Check interface.
Cannot be rectified by a reset.
Send the device to customer service.
Send the device to customer service.
Send the device to customer service.
Service switch on RUN.
Check switch settings:
Address switch S1, S2,
Send the device to customer service.
204i
you can refer to the following
Measures
73