Rockwell Automation 2755 AdaptaScan Software - Manual (Page 134)

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Publication 2755-838
DeviceNet Peer-to-Peer Communications
Peer-to-peer communications are supported between Readers.
You can easily transfer data, inputs, outputs, triggers and other data
between Readers by selecting the other Readers from the
configuration dialogs. However, DeviceNet peer-to-peer
communication is only between Readers. The Reader does not
support peer-to-peer communication with other types of DeviceNet
devices. To communicate with other DeviceNet devices, you must
use DeviceNet master-slave communications.
Important: The maximum number of Readers that can be
connected on DeviceNet peer-to-peer network is 32.
Each DeviceNet network must be all peer-to-peer or all master-slave
communications. You cannot mix peer-to-peer and master/slave
communications on the same network. Do not use AdaptaScan
DH-485 master-slave mode simultaneously with DeviceNet
communications (peer-to-peer or master-slave).
DeviceNet Master-Slave Communications
Connect the AdaptaScan Reader to other DeviceNet devices through
either a PLC (Catalog No. 1771-SDN) or SLC (Catalog No.
1747-SDN) DeviceNet scanner. The AdaptaScan DeviceNet slave
supports up to 7 discrete inputs, 15 discrete outputs, and bar code
messages. The AdaptaScan operates as a slave device to the
DeviceNet scanner.
Reader Reader
Other
PLC-5 with 1771-SDN (DeviceNet Scanner)
DeviceNet Devices
Note: DeviceNet Input #8 and Output #16 control the transmission
of bar code messages using DeviceNet master-slave. Refer to
DeviceNet Messages in Chapter 10.
Note: The maximum number of readers that can be connected on an
AdaptaScan only DeviceNet master-slave network is 63.
DeviceNet I/O