Supplementary Example (Select Display In °C Or °F) - Rockwell Automation AB quality Allen-Bradley 1746-INT4 User Manual

Supplementary Example
(select display in °C or °F)
1746-INT4 1746-IB8
SLC 5/02 Processor
Display Panel
Cabinet
Ambient
.
Cabinet
Ambient
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.
(5).1746-OB16
Bath
Steam Chilled H
.
. .
°C °F
Selector Switches
(I:2/1) and (I:2/0)
O
2
Bath
Thermocouple
Type J
Application Programming Examples
Ambient Temperature
Thermocouple Type T
Chilled H
Type J
Chilled
Thermocouple
Type K
Steam Thermocouple
Steam Pipe
Publication 1746-UM614B-EN-P - September 2007
73
O Pipe
2