Transitions
A transition passes when the step above is active and its condition tag is on. The step above turns off and the step below turns on.
The condition tag
Create chart tags gives each transition that is not Always true a BOOL condition tag, such as Mixer_TR001. Your ladder or FBD logic turns it on.
For example, a rung XIC LevelHigh → OTE Mixer_TR002 moves the chart out of the step above when the level is high. Open logic on a selected transition opens that logic.
In the Inspector
- Always true: no condition. The transition passes once the step above has been active for its minimum time.
- Minimum active (ms): how long the step above must be active before the transition can pass.
- Priority: when several transitions leave one step, the lowest number is checked first and wins.
- Rename or Delete transition.
Common mistakes
- The chart waits in a stepNothing turns the condition tag on. Use Open logic to check.
- Two paths both want to goFrom one step, only the transition with the best priority passes.