Allen-Bradley DeviceNet 1756-DNB - Node Address 1 Input Data; Node Address 2 Input Data

B–4 Scan List Example
Publication 1756–6.5.15 – July 1998
Node Address 1 Input Data
Series 9000 photoelectric sensor
photoelectric sensor input byte
1D1S
1 byte
The photoelectric sensor at node address 1 is a
strobed device that produces 1 byte of
input data.
Remember that this node must be enabled in
the scan list before it may participate in I/O
communication with the communication
module.
In map segment 1, input data is taken from the
strobe response starting at byte 0, bit 0.
This input data is mapped to the scanner’s
input image table starting at word 0, bit 10.
The number of bits mapped is 2 (1 data bit
and 1 status bit).
Node Address 2 Input Data
Series 9000 photoelectric sensor
photo-eye input byte
2D2S
1 byte
The photoelectric sensor at node address 2 is a
strobed device that produces 1 byte of input data.
Remember that this node must be enabled in
the scan list before it may participate in I/O
communication with the communication module.
In map segment 1, input data is taken from the
strobe response starting at byte 0, bit 0.
This input data is mapped to the communication
module’s input image table starting at word 0, bit
12.
The number of bits mapped is 2 (1 data bit
and 1 status bit).