Rockwell Automation Allen-Bradley 842D, User Manual

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1-2 Overview
– Scaling function - Setting the single-turn resolution as well as
the number of turns. The single-turn resolution is any whole
number from 1 to 8192. The number of turns must be 1, 2, 4,
8, 16, 32, 64... up to 8192.
– Up to eight programmable cams
– Velocity Warning Flags
• Status information is available via the Network Status LED on
the back of the encoder.
• Velocity Feedback (Steps per second, RPM, or RPS)
• Diagnostic and Position Error Alarms
• Node address, Baud rate, and bus termination resistance are
selected via DIP switches under the removable cover on the back
of the encoder.
Overview of Setting Up the
Encoder
To set up the 842D DeviceNet encoder, you must perform the
following tasks:
1. Install the encoder. Refer to Chapter 2, Installation .
2. Set the encoder’s node address, transmission rate and bus
termination. Refer to Chapter 3,
Configuring the DeviceNet
Encoder DIP Switches .
3. Configure the encoder’s parameters. Refer to Chapter 4,
Configuring the Encoder Using RSNetWorx for DeviceNet .
4. Configure a scanner (either PLC or SLC) to communicate with
the encoder. Refer to Chapter 5,
Configuring a Scanner to
Communicate with the Encoder .