Rockwell Automation 2755 AdaptaScan Software - Manual (Page 149)

10–12
Publication 2755-838
DeviceNet Master-Slave Communications
The AdaptaScan Reader connects to other DeviceNet slave devices
through either a PLC (Catalog No. 1771-SDN) or SLC (Catalog No.
1747-SDN) DeviceNet Scanner. The AdaptaScan operates as a slave
device to the DeviceNet scanner.
Message Formatting
Bar code message data sent to an SDN (DeviceNet) scanner is
formatted the same as messages sent through the serial port. Note
the following when formatting messages:
•
If a replacement string is longer than the length specified in the
SDN scanner addressing, the message is truncated.
•
If a replacement message is shorter than the length specified in
the SDN scanner addressing, the message is padded with the
specified fill character.
•
If a pass/fail replacement string is longer than the length specified
in the SDN scanner addressing, the least significant bytes are
truncated.
Note: You must select DeviceNet option as the message destination
on the Message Format dialog.
DeviceNet Messages