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SoftM (virtual status module)

Home Assistant can act as a virtual status module (VSM) for Software Members (SoftM) — similar to a hardware STM.

Bus behaviour

Bus command	Action
Toggle	Flip memory, emit Set or Reset (cancels SoftM timer)
Status	Reply with Set / Reset from memory (does not cancel SoftM timer)
Timer (optional)	Set, wait softm_timer seconds, then Reset. Similar to the INM software member timer, but better: this timer does obey a Reset command — a frustrating limitation of real SoftM timers.

Enabling

Both required:

1. Integration settings → Enable SoftM status tracking
2. Per address: enable_softm_status_tracking: true (optional softm_timer, persist_state, default_state)

Important rules

• Do not combine SoftM tracking with check_status on the same address (YAML/UI reject that). You cannot be the status module for an address and also poll Status from the bus at the same time: that Status command would have to be answered by yourself, which makes no sense.
• Do not enable SoftM tracking if a hardware STM already tracks that SoftM address.
• SoftM addresses must use on_command: Set and off_command: Reset. Toggle (or any other command) is rejected: the virtual status module already answers bus Toggle (and Timer), and that answer is always Set or Reset.