Mitsubishi Electronics Mitsubishi Digital Electronics Water System SW1DNC-GXW2-E ユーザーズマニュアル

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This section explains how to create a program for controlling a tea server system which consists of a tea 
pouring operation, water refilling operation and warning indicating operation. This section also explains a 
program which works as one Structured Project, and the program operations.

■ Tea pouring operation

When a user presses the tea pouring button X1 (that is, when X1 turns ON) while the cup detection 
X0 is ON, the tea pouring output Y10 turns ON and the tea server pours tea into the cup.  The tea 
server pours tea while the user is pressing and holding the button, and stops pouring when the user 
releases the button.  
The tea server does not pour tea when the user presses the tea pouring button X1 if the cup 
detection X0 is OFF.  

■ Water refilling operation

When water inside the water refill tank is running low, the lower limit switch X3 turns ON, and the 
water refill output Y11 turns ON.  
When the water refill output Y11 is ON and the water supply to the tank is sufficient, the upper limit 
switch X4 turns ON and the water refill output Y11 turns OFF.  

■ Warning indicating operation

• When the tea server performs the water refilling operation 5 times, the tea leaf replacement 

indicator lamp Y12 turns ON.  

• When a user presses the tea leaf replacement check button X2, the tea leaf replacement indicator 

lamp Y12 turns OFF.

Water refill output 

check

pour

Y10

Y10

Upper limit switch 
X4

Y11

Tea leaf
replacement
indicator lamp

Y12

Tea leaf
replacement
check button

X2

Tea pouring

button

X1

Y10

Lower limit switch
X3

Water refill tank

Tea pouring

output

Cup detection 

X0