Note

Please participate in the MPF User Survey 2018.

state_machines:

Config file section

Valid in machine config files	YES
Valid in mode config files	YES

The state_machines: section of your config is where you configure generic state machines.

Required settings

The following sections are required in the state_machines: section of your config:

states:

One or more sub-entries, each in the format of type: str:subconfig(state_machine_states).

List all of your states here. For examples:

state_machines:
  my_state:
    states:
      start:
        label: Start state
      step1:
        label:
        show_when_active:
          show: on
          show_tokens: None
        events_when_started: step1_start
        events_when_stopped: step1_stop
      step2:
        label: Step 2
    transitions:

transitions:

List of one (or more) values, each is a type: sub-configurating containing state_machine_transitions settings.

List all your transitions here (we start with the same steps as above):

state_machines:
  my_state:
    states:
      start:
        label: Start state
      step1:
        label:
        show_when_active:
          show: on
          show_tokens: None
        events_when_started: step1_start
        events_when_stopped: step1_stop
      step2:
        label: Step2
    transitions:
      - source: start
        target: step1
        events: state_machine_proceed
      - source: step1
        target: step2
        events: state_machine_proceed2
        events_when_transitioning: going_to_step2
      - source: step2
        target: start
        events: state_machine_proceed3
      - source: step1, step2
        target: start
        events: state_machine_reset

Optional settings

The following sections are optional in the state_machines: section of your config. (If you don’t include them, the default will be used).

persist_state:

Single value, type: boolean (Yes/No or True/False). Default: False

If set to true MPF will restore the state of a logic_block on mode restart.