Rockwell Automation 1746-INT4 Thermocouple/MV Isolated/ User Manual - Manual (Page 73)

Publication 1746-UM614B-EN-P - September 2007
Application Programming Examples 73
Supplementary Example
(select display in °C or °F) This example shows how to display the temperature of several
thermocouples at display panel. A selector switch (I:2/0) lets the
operator choose between displaying temperatures in °C or °F. A
second selector switch (I:2/1) lets the operator switch a display
between the ambient temperature near the bath and the temperature
inside the control cabinet containing the SLC controller. Each display
is a four digit, seven segment LED indicator display with the last digit
representing tenths of a degree. The displays have dc-sinking inputs
and use a BCD data format.
Bath Ambient
. .
Ambient
Cabinet
Cabinet
°C
Chilled H
2
O Steam
. .
°F
(5).1746-OB16
1746-IB8
SLC 5/02 Processor
1746-INT4
Display Panel
Selector Switches
(I:2/1) and (I:2/0)
Bath
Thermocouple
Type J
Chilled H
2
O Pipe
Type J
Chilled
Thermocouple
Type K
Steam Thermocouple
Steam Pipe
Ambient Temperature
Thermocouple Type T