Rockwell Automation 1746-NR4 SLC RTD/Resistance Input Module User Manual User Manual
Page 22
Publication 1746-UM008B-EN-P - December 2006
22 Overview
The Channel Configuration Words (output image) contain
user-defined configuration information for the specified input channel.
This information is used by the module to configure and operate each
channel. The Channel Status Words (input image) contain status
information about the channel’s current configuration and operational
state. The input data values of the analog input channel are contained
in the Channel Data Word (input image), which is valid only when the
channel is enabled and there are no channel errors (for example,
broken sensor or overrange.)
You set the Scaling Limit Words (output image) to provide a definable
scaling range for the temperature resistance data when using the
proportional counts data type.
Image Table
Input Image
Word
Function
Output
Image Word
Function
0
Channel 0 data
0
Channel 0 configuration
1
Channel 1 data
1
Channel 1 configuration
2
Channel 2 data
2
Channel 2 configuration
3
Channel 3 data
3
Channel 3 configuration
4
Channel 4 data
4
User-set Lower limit scale 0
5
Channel 5 data
5
User-set Upper limit scale 0
6
Channel 6 data
6
User-set Lower limit scale 1
7
Channel 7 data
7
User-set Upper limit scale 1