Rockwell Automation Publication 1769-UM021G-EN-P - October 2015
137
Communicate over Networks
Chapter 6
Compact I/O 1769-SDN DeviceNet Scanner
You connect a CompactLogix 5370 L2 or L3 controller to a DeviceNet network
via a Compact I/O 1769-SDN DeviceNet scanner.
Before installing the scanner, consider the following:
•
You can connect the scanner to an adjacent controller, power supply, or I/
O module.
•
You must account for these two requirements jointly:
–
Power Supply Distance Rating - Described on
–
Current Capacity in CompactLogix 5370 L3 Control Systems -
Described on
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The scanner, as a master, can own up to 63 slave I/O nodes.
•
Another DeviceNet master can own a scanner that is simultaneously a
master and be a slave.
The scanner has this functionality:
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Supports messaging to devices, not controller to controller
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Supports control-level network to device-level network for programming,
configuration, control, or data collection
•
Supports back up your CompactLogix 5370 L2 or L3 controller on the
DeviceNet network
For more information on using the 1769-SDN to back up your
CompactLogix 5370 L2 or L3 controller, see the 1769-SDN DeviceNet
Scanner Module User Manual, publication
•
Shares a common application layer with EtherNet/IP networks
•
Offers diagnostics for improved data collection and fault detection
