Rockwell Automation 1747-L5xx SLC 500 Modular Hardware Style User Manual - Manual (Page 233)

Publication 1747-UM011G-EN-P - June 2008
Control Networks 233
DeviceNet Network A DeviceNet network connects plant floor devices directly to the control
system (for example, SLC 500 controller) reducing the number of I/O
interfaces and wiring associated with a typical hard-wired solution. The
DeviceNet communication network is a completely open device network and
has the support of industry’s leading sensor, actuator, and control
manufacturers.
The 1747-SDN DeviceNet Scanner
In a typical configuration, the 1747-SDN DeviceNet Scanner acts as an
interface between DeviceNet devices and the SLC 5/02, SLC 5/03, SLC 5/04,
and SLC 5/05 processors. The scanner communicates with DeviceNet devices
over the network to:
• read inputs from a device.
• write outputs to a device.
• download configuration data.
• monitor a device’s operational status.
The scanner communicates with the SLC 500 processors to exchange I/O
data. Information exchanged includes:
• device I/O data.
• status information.
• configuration data.
A single scanner (master) can communicate with up to 63 nodes (slaves) on
DeviceNet. The SLC system supports multiple scanners if more devices are
required to be controlled by a single SLC 500 processor.
TIP
The SLC 5/03 OS302 or later, SLC 5/04 OS401 or later, and SLC
5/05 processor support remote I/O passthru via both their
communication ports.