Rockwell Automation 2706-LV2P_LV2R_LV4P_LV4R DL40 PLUS USER MANUAL - Manual (Page 117)

Remote I/O Communications 8–25
Publication 2706-6.1
Message/Variable run mode can be selected using the Onboard
Editor or the Offline Programming Software. It is the same as the
Message/Variable/Slave run mode except:
•
You cannot override the slave address selected as a Message
Attribute.
•
Your PLC can send up to the equivalent of 6 (not 5) full word
variables if using discrete I/O.
•
In Message/Variable/Slave run mode, the last word (for 1 /
2
, 3 /
4
,
full rack only) of the Output Image Table is always interpreted as
the slave address no matter what slave address was chosen as a
message attribute.
Note: 0 = use slave address selected as a message attribute.
•
In Message/Variable run mode, the Output Image Table has no
slave address and the slave address selected as a message attribute
is always used.
Triggering a Message Using a Block Transfer Write
Block Transfer Write Length can be 2 to 12 words. If Length is set to
0, a default length of 12 will be used. If more than 12 words are sent,
the DL40 Plus accepts the first 12 words and ignores the rest.
WORD 1
17 16 15 14
Message Number
WORD 0
BCD Sign Bit - 2nd (Ctrl V) Variable
Block Transfer Write File
(Any size rack)
WORD 2
WORD 5
Variable Data
BCD Sign Bit - 3rd (Ctrl V) Variable
BCD Sign Bit - 4th (Ctrl V) Variable
13
WORD 3 Variable Data
WORD 4 Variable Data
WORD 6
Variable Data
Variable Data
12 11
WORD 7 Variable Data
Variable Data WORD 8
Variable Data WORD 9
Variable Data WORD 10
Variable Data WORD 11
10 7 6 5
BCD Sign Bit - 5th (Ctrl V) Variable
BCD Sign Bit - 6th (Ctrl V) Variable
BCD Sign Bit - 7th (Ctrl V) Variable
BCD Sign Bit - 8th (Ctrl V) Variable
BCD Sign Bit - 9th (Ctrl V) Variable
BCD Sign Bit - 10th (Ctrl V) Variable
BCD Sign Bit - 1st (Ctrl V) Variable
Message/Variable Run Mode