17.3 Exercise

Exercise: Setting the function of a vending machine with the schedule feature

a) Create three digital tags named ‘VENDING’, ‘LIGHT’, and ‘WASHER’.

b) Click [Tools] – [Schedule] to bring up the ‘Schedule List’ dialog box.

c) Press the [Add Schedule] button and add each schedule as shown below.

• Title: Vending machine power ON

• Time Setting: Check ‘Repeat Settings’ and specify the time as 6:30, daily.

• Task Setting: Select the ‘Command’ option and enter the operation as ‘VENDING = 1’.

• Title: Activate washer

• Time Setting: Check ‘Repeat Settings’ and specify the time as 6:31, daily.

• Task Setting: Select the ‘Command’ option and enter the operation as ‘WASHER = 1’.

• Title: Light ON

• Time Setting: Check ‘Repeat Settings’ and specify the time as 18:30, daily.

• Task Setting: Select the ‘Command’ option and enter the operation as ‘LIGHT = 1’.

• Title: Vending machine power / light OFF

• Time Setting: Check ‘Repeat Settings’ and specify the time as 23:30, daily.

• Task Setting: Select the ‘Write Tag Value’ option and add ‘VENDING’ and ‘LIGHT’ to the list.

Enter each tag name and value into the text field, then press [Add] to register the tag, as shown below.

d) There should be four schedules in the ‘Schedule List’ dialog box as shown below. Press [Save and Close] to saves the schedules.

e) Create a touch object for opening the ‘Schedule Setting’ dialog box.

	Function	Touch
	Action	Command Expression
	Command	ScheduleConfig();

f) Launch the project in Xpanel. Each function of the vending machine activates at the designated time according to the schedule settings. Every day, the power is turned on at 6:30, and the washer operates at 6:31. The light turns on at 18:30, and both the power and light are turned off at 23:30. You can change the time data of the schedule by pressing the touch object.