Rockwell Automation 2706 DL40 HARDWARE USER MANUAL - Manual (Page 116)

Chapter 10
Using Remote I/O
10 – 24
Adding or Deleting Messages and/or Triggering a Priority Message
(Block Transfer Write)
Note: If Block Transfer Write Length is set to 0 in your PLC program, a
default length of 2 will be used.
WORD 1
17 16 15 14 Priority Message Number
Message Number
WORD 0
Add/Delete Bit
Block Transfer Write
File
Any rack size
Messages can be added or deleted while Priority Messages are being
triggered. If you want to trigger a Priority Message but do not want to change
the Message List, you must set
Message Number (in word 1) to 0.
Return Message Number and ASCII Data for
Message Being Displayed and Length of Message List to PLC
(Block Transfer Read)
Note: If Block Transfer Read Length is set to 0 in the PLC program, the
DL40 will return 12 words.
WORD 1
17 16 15 14
Message Number
WORD 0
Enter Bit
Block Transfer Read File
Any rack size-2 to 12 Words
WORD 2
WORD 3
ASCII Character 1
Acknowledge Bit
Clock/Date Data Bit = 0
Diagnostic Code
ASCII Character 3
ASCII Character 2
ASCII Character 4
WORD 4
WORD 5 ASCII Character 7
ASCII Character 6
ASCII Character 8
ASCII Character 5
WORD 6
WORD 7 ASCII Character 11
ASCII Character 10
ASCII Character 12
ASCII Character 9
WORD 8 ASCII Character 13 ASCII Character 14
WORD 9 ASCII Character 15 ASCII Character 16
WORD 10 ASCII Character 17 ASCII Character 18
WORD 11 ASCII Character 19 ASCII Character 20
Length of Message List