Extended Diagnosis - Danfoss VLT PROFIBUS DP MCA 101 Programming Manual

Troubleshooting

8.5 Extended Diagnosis

Receive the extended diagnosis function, alarm and
warning information from the frequency converter. The
setting of parameter 8-07 Diagnosis Trigger determines
which frequency converter events trigger the extended
diagnosis function:
•
When parameter 8-07 Diagnosis Trigger is set to
[0] Disable, no extended diagnosis data are sent
regardless of whether they appear in the
frequency converter.
•
When parameter 8-07 Diagnosis Trigger is set to
[1] Alarms, extended diagnosis data are sent
when one or more alarms arrive in the alarm
16-90 Alarm Word or 9-53 Profibus Warning Word.
When parameter 8-06 Reset Control Word Timeout is set to
[2] Alarms/Warnings, extended diagnosis data are sent if 1
or more alarms/warnings arrive in the alarm 16-90 Alarm
Word or 9-53 Profibus Warning Word, or in the warning
8 8
16-92 Warning Word.
The extended diagnosis sequence is as follows:
If an alarm or warning appears, the frequency converter
indicates that to the master by sending a high priority
message via the output data telegram. This causes the
master to send a request for extended diagnosis
information to the frequency converter, to which the
frequency converter replies. When the alarm or warning
disappears, the frequency converter again indicates that to
the master, and on the following request from the master,
return a standard DP diagnosis frame (6 bytes).
54
Programming Guide
Byte
0 to 5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Table 8.18 Content of the Extended Diagnosis Frame
Danfoss A/S © Rev. 05/2014 All rights reserved.
Bit no. Name
- Standard DP diagnosis data
- PDU length
0-7 Status type =0x81
8-15 Slot=0
16-23 Status information
24-31 16-90 Alarm Word
32-39 16-90 Alarm Word
40-47 16-90 Alarm Word
48-55 16-90 Alarm Word
56-63 Reserved for future use
64-71 Reserved for future use
72-79 Reserved for future use
80-87 Reserved for future use
88-95 16-92 Warning Word
96-103 16-92 Warning Word
104-111 16-92 Warning Word
112-119 16-92 Warning Word
120-127 Reserved for future use
128-135 Reserved for future use
136-143 Reserved for future use
144-151 Reserved for future use
152-159 9-53 Profibus Warning Word
160-167 9-53 Profibus Warning Word
168-175 Reserved for future use
176-183 Reserved for future use
184-191 Reserved for future use
192-199 Reserved for future use
MG37G102