Rockwell-automation Logix5000 Controllers Sequential Function Charts P Manuel d'utilisateur télécharger pdf (Page 79)

Force steps Chapter 3

Forces tab ---------->

Forces tab status Means

Enabled

• If the project contains any forces of this type, they are overriding your logic.

• If you add a force of this type, the new force immediately takes effect

Disabled

Forces of this type are inactive. If the project contains any forces of this type,

they are

not overriding your logic.

Installed At least one force of this type exists in the project.

None Installed No forces of this type exist in the project.

Force LED

If your controller has a FORCE LED, use the LED to determine the status of any

I/O forces.

Important: The FORCE LED shows only the status of I/O forces. It does not show that status of SFC forces.

If the FORCE LED is Then

Off

• No tags contain force values.

• I/O forces are inactive (disabled).

Flashing

• At least one tag contains a force value.

• I/O forces are inactive (disabled).

Solid

• I/O forces are active (enabled).

• Force values may or may not exist.

GSV instruction

This example shows how to use a GSV instruction to get the status of forces.

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Rockwell-automation Logix5000 Controllers Sequential Function Charts P Manuel d'utilisateur Page 79