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Chapter Objectives
Example Applications
Module Functions
Introducing the Absolute Encoder Module
This chapter describes:
example applications of the absolute encoder module
functions of the module
Allen-Bradley processors compatible with the absolute encoder module
encoders you can use with the module
module specifications
The absolute encoder module is usually used for:
absolute-position feedback
high-speed response to position based on encoder values
immunity to loss of position from power loss or power interruptions
The Absolute Encoder Module (cat. no. 1771-DE) is an intelligent module
that provides high-speed response to machine position independently of
the programmable controller scan. It can:
monitor the position of an absolute encoder that has up to 12 bits
control up to eight high-current outputs based on comparisons between
encoder position and your preset values
provide throughput for all eight outputs in less than 200 us
communicate with the programmable controller through block transfers
return the status of outputs and the position of an absolute encoder to
the programmable controller
In addition, the module can switch 2A DC per output with no derating
when all outputs are on, allowing 16A continuous per module.
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