Diagnostics and troubleshooting
Leuze electronic
MA 258
i
89
TNT
35/7-2
4
V
13
Diagnostics and troubleshooting
If problems should occur during commissioning of the MA 258
i
you can refer to the following
table. Typical errors and their possible causes are described here as well as tips for their
elimination.
13.1
General causes of errors
Error
Possible error causes
Measures
Data loss
(DL bit)
Data telegram longer than the bus
telegram in bus cycle/memory size.
Increase in bus telegram length.
Toggle out data earlier.
Data in the RS 232
instead of in the
buffer
Incorrect order.
Correct order:
Provide data, toggle CTB.
PWR
status LED on the circuit board
Off
No supply voltage connected to the device. Check supply voltage.
Hardware error.
Send the device to customer service.
Green/orange,
flashing
Device in boot mode.
No valid firmware, send device to cus-
tomer service.
Continuous orange
light
Device error.
Send the device to customer service.
Firmware update failed.
MS
LED on the housing (see figure 8.1 on page 43)
Off
No supply voltage connected to the device. Check supply voltage.
Red, flashing
Incorrect baud rate / address.
Check switch settings:
Check baud rate or address.
NS
LED on the housing (see figure 8.1 on page 43)
Red continuous light Network error.
Check wiring.
LINK /ACT
LEDs on the housing (see figure 8.1 on page 43)
Off
No connection.
Check wiring/IP address.
Table 13.1:
General causes of errors
