Rockwell Automation 1746-NR4 SLC RTD/Resistance Input Module User Manual - Manual (Page 111)

Publication 1746-UM008B-EN-P - December 2006
Application Examples 111
Supplementary Example This example provides the application setup, channel configuration,
and program setup.
Application Setup (Four Channels °C
↔ °F)
Device Configuration for Displaying Many RTD Outputs shows how to
display the temperature of several different RTD units at one
annunciator panel. A selector switch (I:2/0) allows the operator to
choose between displaying data in °C and °F. Each of the displays is a
4-digit, 7-segment LED display with the last digit representing tenths
of a degree. The displays have dc-sinking inputs and use a BCD data
format.
Device Configuration for Displaying Many RTD Outputs
Chilled H
2
O Pipe In
Steam Pipe In
Bath
200 Ω Platinum RTD (385)
Chilled H
2
O Pipe Out
Steam Pipe Out
Bath
Display Panel
5C 5F
.
Chilled H
2
O Steam
. .
200 Ω Platinum RTD (385)
1000 Ω Platinum RTD (385)
Ambient
.
(4) 1746-OB16
1746-IB8 1746-NR4
SLC 5/04
Ambient Temperature
604
Ω Nickel/Iron (518)
Selector Switch (I:2/0)