Troubleshooting/FAQs
Control Units CU240S
5-4 Operating Instructions (Compact), 04/2006, A5E00766042B AA
Identification of the communications components
The read-only parameter r2053 shows the information by which the various firmware
components of the PROFIBUS-DP interface can be identified.
Table 5-2 Identification of communications firmware
Parameter Meaning
0: Inverter cannot identify the communications interface
1: PROFIBUS DP detected
2: No assigned
r2053.00
56: Undefined communications error
r2053.01 Firmware version
r2053.02 Constant "0"
r2053.03 Firmware date (year)
r2053.04 Firmware date (day and month)
Standard diagnostics
When the parameter P2041.03 = 0, then by using the read-only parameter r2054 and it’s
indices, it is possible to obtain detailed diagnostic information regarding the PROFIBUS-DP
interface. This information is listed in table below.
Table 5-3 Standard diagnostics
Parameter Meaning
PROFIBUS-DP status:
0: Off
1: Baud rate search
2: Baud rate found
3: Cyclical data exchange
r2054.00
(> 100: other diagnostic screen active)
r2054.02 Number of acyclical links with class 2 master (PC, OP): 0 … 2
r2054.03 Error number of last unsuccessful parameter access operation through an acyclical
link.
r2054.04 Parameter number of last unsuccessful parameter access operation
r2054.05 Sub-index of last unsuccessful parameter access operation
When parameter accessing errors occur, r2054.03 display the appropriate error number,
these are listed in table below.
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