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