Rockwell Automation 1747-SCNR ControlNet Scanner Module Reference Manual - Manual (Page 59)

Publication 1747-RM623D-EN-P - June 2006
Use CIP Messaging to Access Local Database and ControlNet Data Files B-3
See the table that contains examples of valid and invalid range of
values for Instance Number, Member Number, and Size Parameter.
Get Member Set Member
Valid
Instance Number = 0x08
Member Number = 0x01
Size Parameter = 0x01 The 1747-SCNR scanner
returns the first word of the
Local Database file [M0:0]. The 1747-SCNR scanner
writes 1 word of data into the
first word of the Local
Database file [M0:0].
Instance Number = 0x08
Member Number = 0x012D
Size Parameter = 0x14 The 1747-SCNR scanner
returns 20 words of the Local
Database file starting with
one-based word offset of
301(dec) [M0:300]. The 1747-SCNR scanner
writes the 20 words of data
into the Local Database file
starting at the one-based
word offset of 301(dec)
[M0:300].
Instance Number = 0x05
Member Number = 0x01
Size Parameter = 0x02 The 1747-SCNR scanner
returns 2 words of data
starting from I:1. The 1747-SCNR scanner
writes 2 words of data
starting at I:1.
Invalid Instance Number = Any
Member Number = 0x00
Size Parameter = 0x02 0 is an invalid member
number. Request rejected. 0 is an invalid member
number.
Request rejected.