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 is sent
regardless of whether it appears in the frequency
converter or not.
•
When parameter 8-07 Diagnosis Trigger is set to [1]
Alarms, extended diagnosis data is sent when 1
or more alarms arrive in the alarm
parameter 16-90 Alarm Word or
parameter 9-53 Profibus Warning Word.
When parameter 8-06 Reset Control Word Timeout is set to
[2] Alarms/Warnings, extended diagnosis data is sent if 1 or
more alarms/warnings arrive in the alarm
parameter 16-90 Alarm Word or parameter 9-53 Profibus
Warning Word, or in the warning parameter 16-92 Warning
Word.
The extended diagnosis sequence is as follows:
If an alarm or warning appears, the frequency converter
sends a high-priority message to the master via the output
data telegram. The master then sends a request for
extended diagnosis information, to which the frequency
converter replies. When the alarm or warning disappears,
the frequency converter again sends a message to the
master, and on the following request from the master,
returns a standard DP diagnosis frame (6 bytes).
MG37G202
Programming Guide
Byte
0–5
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 © 01/2016 All rights reserved.
Bit Name
number
– Standard DP diagnosis data.
– PDU length.
0–7 Status type=0x81.
8–15 Slot=0.
16–23 Status information.
24–31 Parameter 16-90 Alarm Word.
32–39 Parameter 16-90 Alarm Word.
40–47 Parameter 16-90 Alarm Word.
48–55 Parameter 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 Parameter 16-92 Warning Word.
96–103 Parameter 16-92 Warning Word.
104–111 Parameter 16-92 Warning Word.
112–119 Parameter 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 Parameter 9-53 Profibus Warning Word.
160–167 Parameter 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.
8 8
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