Picture Display - Basic Operations

You can use a variable to select and display a predefined picture with a picture display.

A picture display can have up to 256 states. Each state can have a predefined picture. The maximum number of states that a picture display can have is determined by the state type and the data type of the monitored variable. The following table shows the maximum in each case.

State Type	Type of Variable	Maximum
Bit	Bit	2
Value	16-bit	256
	32-bit	256
LSB	16-bit	17
	32-bit	33
Animation	Bit	256 Note: This is a special state type that is unique to picture displays. The bit variable is used to control the animation. When the bit is on, the animation is enabled. When the bit is off, the animation is disabled. The animation is performed by showing the picture of each state one by one at a specified change frequency.

You need to specify the number of states for a picture display and the number must not exceed the allowable maximum. You can define a picture for each state. At runtime, a picture display shows the picture corresponding to the state of the monitored variable. The state of the monitored variable is determined by the state type and value of the variable.

You can complete all the settings of a picture display in the Picture Display property sheet. This sheet contains the following three pages.

■ General
Described in Section 9.5.4.

■ Picture
Described in Section 4.3.7.

■ Visibility
Described in Section 4.4.6.