Dukane 8944 Command format, Send Data format, Reply Error code, Header Data RS-232Ccommand

4. Utilize projector – Advanced -

Command format

Command formats differ among the different communication ports. TCP #23

You can use the RS-232C commands without any changes. The reply data format is the same as the RS-232C commands. However, the following reply will be sent back in the event of authentication failure when authentication is enabled.

<Reply in the event of an authentication error>

Reply

Error code

0x1F

0x04

0x00

TCP #9715

Send Data format

The following formatting is added to the header (0x02), Data length (0x0D), Checksum (1byte) and Connection ID (1 byte) of the RS-232C commands.

	Header	Data		RS-232Ccommand	Checksum	Connection
		length				ID
	0x02	0x0D		13 bytes	1 byte	1 byte
Header			→ 0x02, Fixed
Data length			→ RS-232C commands byte length (0x0D, Fixed)

RS-232C commands → RS-232C commands that start with 0xBE 0xEF (13 bytes)

Check Sum	→ This is the value to make zero on the addition of the lower
	8 bits from the header to the checksum.
Connection ID	→ Random value from 0 to 255 (This value is attached to
	the reply data)

77