Rockwell Automation 1336T ControlNet Frn1.02 Rev 1.5 - Manual (Page 74)

4–32 Using Unscheduled Messaging
Publication 1336 FORCE–5.18 ––March, 1999
This message is sent by the PLC Communications Adapter Board to
activate the BRAM functions detailed in the message request.
PLC Block Transfer Instruction Data
PLC Message Write instruction length: 4 words
PLC Message Read instruction length: 3 words
Message Length
4
Header
Word 1 Header
Word 1
PLC Decimal Value
-31998
Note Used
PLC Decimal Value
770 –– Message OK
0
-31998 –– Message Error
0
EE Command
EE Save
EE Recall
EE Default Initialize
EE Command Value
00
01
02
03
Message Structure
Header
Word 2
Header
Word 3
Header
Word 4
Header
Word 2
Header
Word 3
0
PLC Request –– PLC Message Write
Drive Response –– PLC Message Read
Message Operation
The BRAM memory function allows three different message
requests:
•
BRAM Save saves parameter and link information from working
memory or RAM to BRAM.
•
EE Recall retrieves the last saved data from BRAM and places it
in working memory or RAM.
•
EE Default Initialize sets all parameter values and links to default
in RAM without altering contents in BRAM.
If an error has occurred, word 2 of the response returns a value of
-31998.
EE Memory Request
Save/Recall/Initialize