Rockwell Automation 1771-IR Series D RTD Input Module User Manual - Manual (Page 29)

Chapter
4
Publication 1771Ć6.5.129 - March 2000
Configuring Your RTD Module
In this chapter you will read how to configure your module’s
hardware, condition your inputs and enter your data.
Because of the many analog devices available and the wide variety
of possible configurations, you must configure your module to
conform to the analog device and specific application that you have
chosen. Data is conditioned through a group of data table words that
are transferred to the module using a block transfer write instruction.
You can configure the following features for the 1771–IR series D
module:
•
data format
•
RTD type
•
units of measure ( o C, o F or ohms)
•
real time sampling
•
calibration
•
bias
Configure your module for its intended operation by means of your
programming terminal and write block transfers (BTW).
Note: Programmable controllers that use 6200 software
programming tools can take advantage of the IOCONFIG utility to
configure this module. IOCONFIG uses menu–based screens for
configuration without having to set individual bits in particular
locations. Refer to your 6200 software literature for details.
During normal operation, the processor transfers from 1 to 14 words
to the module when you program a BTW instruction to the module’s
address. The BTW file contains configuration words, bias values,
and calibration values that you enter for each channel. When a block
transfer length of 0 is programmed, the 1771–IR/D will respond
with the Series A default of 14.
Chapter Objectives
About Configuring Your
RTD Module