Rockwell Automation 1336T ControlNet Frn1.02 Rev 1.5 - Manual (Page 87)

4–45 Using Unscheduled Messaging
Publication 1336 FORCE–5.18 ––March, 1999
This read–only message retrieves from the drive the user custom
product name/location test string which identifies the product. The
text string is 16 characters long.
PLC Block Transfer Instruction Data
PLC Message Write instruction length: 3 words
PLC Message Read instruction length: 11 words
Header
Word 1 Header
Word 1
PLC Decimal Value
261
Header
Word 2
Header
Word 3
Header
Word 2
Header
Word 3
PLC Decimal Value
261 –– Message OK
-32507 –– Message Error
Message Structure
Message Length
3
0
0
Product Text
Character 2 Character 1
Data
Word 4
Product Text
Character 4 Character 3
Data
Word 5
Product Text
Character 6 Character 5
Data
Word 6
Product Text
Character 8 Character 7
Data
Word 7
Product Text
Character 10 Character 9
Data
Word 8
Product Text
Character 12 Character 11
Data
Word 9
Product Text
Character 14 Character 13
Data
Word 10
Product Text
Character 16 Character 15
Data
Word 11
0
PLC Request –– PLC Message Write
Drive Response –– PLC Message Read
Message Operation
This operation reads your custom product test string stored in the
drive. The response message returns this information beginning with
data word 4. The text string is returned with each data word
containing two ASCII characters per word. This data returns with the
first and second characters in opposite order as shown in the
example.
User Text String
User Text String Read