Last update: 22 Feb 2000

Commands:

• all commands preceded by # and terminated with CR (ENTER)
• responses are terminated by CRLF
• Note: for power controlling commands, 0 = ON and 1 = OFF

C - Close inlet

• responds with 0
• Note: test with STAT command for completion

H - request HELP menu

K - Kill inlet motor power

• responds with 1
• Note: stops the motor immediately

M - Motor commands (direct control)

• MEN[=0,1] - request current status or power ON/OFF motor
  • eg: MEN=0 starts motor
  • returns current setting (i.e. 0 or 1) after request or set
• MDIR[=0,1] - request current status or set direction of motor
  • eg: MDIR=0 sets motor direction CW
  • returns current setting (i.e. 0 or 1) after request or set
• MLIM[0,1] - request current status of limit switch 0 or 1
  • eg: MLIM0 request limit switch 0 status (1 = activated, i.e. at limit)
  • switch 0 indicates inlet closed status, switch 1 indicates inlet open status

O - Open inlet

• responds with 0
• Note: test with STAT command for completion

STAT - request HEX status byte

• status bits:
  • bit 0 - Motor Direction - 0 = CW
  • bit 1 - Motor Enable - 0 = ON
  • bit 2 - Motor Main Power (redundant - set to 0 on power up)
  • bit 3 - unused - always 1
  • bit 4 - CW limit switch - 1 = activated (inlet closed)
  • bit 5 - CCW limit switch - 1 = activated (inlet open)
  • bit 6 - unused - always 1
  • bit 7 - unused - always 1

• Useful status return values:
  • C9 - opening
  • E9 - open
  • C8 - closing
  • D8 - closed

• Example: returns CB - not closed or open; stopped midway by K command while opening