Rockwell Automation DEVICENET 1771-SDN, User Manual, Page: 20 / 139

Publication 1771-6.5.132 - June 2000
1-4 Before You Begin
The 1771-SDN scanner module can also be used to bridge a
DeviceNet network with another network.
Address Density
and Discrete I/O
You can use three addressing methods with your 1771-SDN scanner
module. The number of discrete I/O bits you have available for data
transfer is affected by the addressing mode selected.
Configuring Devices and Data Collection on
Higher-Level Networks Via PLC-5/SDN
Target Device to
be configured
Source Device
to collect data
Configuration of device
using RSNetWorx
(Chapters 4 & 5)
DeviceNet Network
Laptop PC
running
RSNetWorx
ControlNet, DH+, or Ethernet Network
Collection of status
or alarm data
(Chapter 6)
SDN scanner
module
Industrial
workstation
running RSView
Addressing Mode Discrete Inputs Discrete Outputs
2-slot 0 bits 0 bits
1-slot 8 bits 8 bits
1/2-slot 24 bits 24 bits