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Address density and discrete i/o, Address density and discrete i/o -4 – Rockwell SoniCrafter DEVICENET 1771-SDN User Manual

Page 20

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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