Allen-Bradley DeviceNet 1756-DNB - FLEX I;O Module Output Mapping Scheme Example

B–10 Scan List Example
Publication 1756–6.5.15 – July 1998
FLEX I/O Module Output Mapping Scheme Example
FLEX I/O Module Output Bytes
The host application transfers
data to the output image table.
1
2
The FLEX I/O output message
is mapped from the output
image table area. A single bit
change detected at this point
causes a new output message
to be sent to the FLEX I/O
module.
1756–DNB Output Data Table
1
2
1 byte 1 byte 1 byte 1 byte
D = data sent to
1794-IB16
word 1
word 0
word 2
word 3
word 4
word 122
D
Output Map Segment
with change of state detection
D
E = data mapped to
1794-OB16
1794-ADN
adapter module
1794-IB16
input module
1794-OB16
output module
0000 0000 0000 0000
0000 0000 0000 0000
0000 0000 0000 0000
0000 0000 0000 0000
0000 0000 0000 0000
0000 0000 0000 0000
Word 0
Word 1
Word 2
Word 3
Word 4
Word 5
Host Platform
Output Image File
EE