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model 2000 DeviceNet Module Manual (DN611/DN611A)
Chapter 4 Operating Procedures for the DN611 (Software)
4
(4) Others
(a) RETYPE (Type of request information) is as follows:
1: RAS history 2: Event history 3: Execution node information
4: RAS information clear
(b) POSITION (read start position) is valid for the read request "event history" only.
To read other types of request, enter 0.
(c) If 0 is entered in POSITION (read start position) in reading event history, event
history can be read beginning with the newest event.
(d) N (read quantity) is valid for the read request "event history" only. To read other
types of request, enter 0.
(e) The maximum value that can be set for N (read quantity) is 10. That is, a
maximum of 10 sets of event history can be read by a RAS information read
request.
(f) RAS information read data
READ_DT structure
RASDAT[0] WORD type RAS information (0)
RASDAT[1] WORD type RAS information (1)
~~ ~
RASDAT[255] WORD type RAS information (255)
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