Rockwell Automation Allen-Bradley 1794-IRT8K, User Manual

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27 Publication 1794-6.5.12 - September 2011
Chapter
4
Read and Write Configuration Maps for the
FLEX I/O Module
Overview
This chapter describes how to configure, read data from, and map data to your
FLEX I/O Thermocouple, RTD, and mV Input module.
Configure Your Input
Module
The Thermocouple, RTD, and mV input module is configured using a group
of data table words mapped by the processor that is used when the connection
to the module is established.
The software configurable features available are:
•
input range selection
•
selectable single pole low pass filter
•
data reported in °F, °C, °K, mV,
Ω
, unipolar or bipolar count
•
fault detection
Configurable Options and
Their Effect on the
Channels
There are two types of configurable options: those that affect all channels, and
those that affect each group of 4 input channels.
Options that Affect All Channels
Input Filter Selection
This combination of bits allows you to select one of eight levels on input
filtering. The single pole, low pass filtering is accomplished by the module
Topic Page
Configure Your Input Module 27
Configurable Options and Their Effect on the Channels 27
Sensor Types 29
Read Data From the Module 30
Map Data for the Module 30
Using Series A Functionality in a Series B Module 38
Chapter Summary 38