Rockwell Automation 2706-LV2P_LV2R_LV4P_LV4R DL40 PLUS USER MANUAL - Manual (Page 121)

Remote I/O Communications 8–29
Publication 2706-6.1
Return Message Number and ASCII Data (Discrete I/O)
The following shows the format of discrete I/O data returned to the
PLC in the Message List run mode. This data may include both the
message number and message text.
WORD 1
17 16 15 14
Message Number
WORD 0
Enter Bit
Input Image Table
WORD 2
WORD 3
ASCII Character 1
Acknowledge Bit
Clock/Date Data Bit
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 ASCII Character 10 ASCII Character 9
Length of Message List
Handshake Bit
Full rack
1/2 rack
3/4 rack
WORD 7 ASCII Character 12 ASCII Character 11
Return Clock or Date Data to PLC (Discrete I/O)
The following shows the format of discrete I/O clock/date data
returned to the PLC from the DL40 Plus in Message List run mode.
WORD 1
17 16 15 14 WORD 0
Input Image Table
WORD 2
WORD 3
Always Returned Empty
Acknowledge Bit
Clock/Date Data Bit
Diagnostic Code
WORD 4
WORD 5
WORD 6
Hour/Month
Handshake Bit
Full rack
1/2 rack
3/4 rack
WORD 7
Second/Year Minute/Day
Always Returned Empty
Always Returned Empty
Always Returned Empty
Always Returned Empty
Always Returned Empty