Canon RE-350 manual Control Protocol, Packet Discrimination Code Assignment, ID number, Parameter

1.6 Control Protocol

RS-232C Interface Connection
Transmission Mode	Full Duplex
Transfer Speed	9600 bps or 2400 bps
Start Bit	1 bit
Data Bit	8 bit
Parity	0 bit
Stop Bit	2 bit
Handshake	RTS/CTS flow control
Others	One response per Command

Note:RS-232Chand shake control signals originate from the PC side (DTE) in this document. In this docu- ment, hexadecimal data will be defined with “$” in front of a number or “h” in back of a number.

1.7 Packet Discrimination Code Assignment

Hexadecimal	Function
10h	“Command Data Packet”
A0h	“C-response Data Packet”
20h	“Event Data Packet”
B0h	“E-response Data Packet”
30Fh	“FP Data Packet”
Every data packet consists of 5 bytes of data.

If the RE-350receives another kind of data packet which will be described below, the RE-350will disregard the data packet and while the RE-350recognizes the data packet is incorrect, the RE-350will inactivate the CTS signal line to the PC.

ID number

Each RE-350can have an individual ID number, (0,1,2 or 3), which will be set by digital switches 3 and 4 on the rear panel. The RE-350will neglect the command data packet which has a different ID number. The PC can recognize which RE-350responds.

Parameter

Each data packet has this parameter. If the data packet does not need the parameter, the content should be set by $0000.

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