July 2004
Intermediate to advanced
352 pages
9h 30m
English
Content preview from Mitsubishi FX Programmable Logic Controllers, 2nd Edition
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//INTEGRAS/ELS/PAGINATION/ELSEVIER UK/PLC/3B2/FINALS-7-6-04/0750656794-CH03 0.3D – 312 – [310–314/5]
19.6.2004 9:21PM
30.3 Temperature conversion ^ SUB1
The program SUB1 is used to demonstrate the use of a sub-routine within a ladder
diagram program.
The main part of the program is used to input via the thumbwheel switches
X10–X27, a temperature in the range 0–100
C.
The sub-routine part of the program then converts the temperature to degree Fahrenheit.
The formula for converting degrees Celsius to degrees Fahrenheit is:
F ¼(
C 9=5)þ32
30.4 Ladder diagram ^ SUB1
312 Mitsubishi FX Programmable Logic Controllers
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