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model 3000 DeviceNet Module Manual (DN311/DN311A)
Chapter 6 RAS Information (Except for RAS Area in Communication Memory)
6
6.3.2 Event History
When request information type 2 is set for RAS information read request, event history
data can be read into the acknowledgement area.
Acknowledgement Area
• Event history composition
• Record capacity: 8 words
• Number of records: 160
• Operation in case of overflow: Old information is refreshed. Thus, 160 of event
traces can always be checked from new information.
• Format: Binary code is used because the format is for DN311 internal information.
See Table 6-5 and Table 6-6 for the contents of the binary codes. Note, however,
that the time is displayed in BCD.
F0
Figure 6-1 Event History Composition (2 events read)
0660H Request code (0015H)
0661H Completion status
0662H Number of RAS information
words
n pieces x words
0663H Event history (maximum 80 words)
:
:
0663H Event code
0664H Detail information 1
0665H Detail information 2 1st event history
0666H Detail information 3
0667H Detail information 4
0668H Month Year
0669H Hour Day
066AH Second Minute
066BH Event code
066CH Detail information 1
066DH Detail information 2
066EH Detail information 3 2nd event history
066FH Detailed information 4
0670H Month Year
0671H Hour Day
0672H Second Minute
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