Rockwell Automation 1746-INT4 Thermocouple/MV Isolated/ User Manual - Manual (Page 71)

71 Publication 1746-UM614B-EN-P - September 2007
Chapter
9
Application Programming Examples
This chapter provides two application examples to help you use the
module.
•
Basic example
•
Supplementary example
The basic example lets you display a temperature.
The supplementary example lets you manually select the display of
temperature in °C or °F.
Basic Example
(to display a temperature) This example lets you display the temperature of a bath °F on an LED
indicator display device. The display device requires BCD data, so the
program must convert the temperature reading to BCD.
Channel Configuration
Configure the thermocouple channel with the following setup:
•
Type J thermocouple (bits 3…0)
•
°F displayed in whole degrees with EU = x10 (bits 8, 5, 4)
•
Set the data word to zero in the event of an open-circuit
(bits 7, 6)
LED Indicator Display
(dc sinking inputs, BCD format)
Thermocouple Type J
Bath
1746-OB16
1746-INT4
SLC 5/02 Processor