0x0000–0xFFFF
BIT0: Set frequency (Hz on, frequency flickering
slowly)
BIT1: Bus voltage (V on)
BIT2: Input terminal state
BIT3: Output terminal state
BIT4: PID reference (% flickering)
BIT5: PID feedback (% on)
BIT7: AI1 (V on)
BIT8: AI2 (V on)
BIT11: Current step of multi-step speed
BIT12: Pulse counting