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1.7 Packet Discrimination Code Assignment
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-232C hand 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.
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-350 receives another kind of data packet which will be described below, the RE-350 will disregard the data
packet and while the RE-350 recognizes the data packet is incorrect, the RE-350 will inactivate the CTS signal line to
the PC.
ID number
Each RE-350 can 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-350 will neglect the command data packet which has a different ID number. The PC can recognize
which RE-350 responds.
Parameter
Each data packet has this parameter. If the data packet does not need the parameter, the content should be set by
$0000.
1.6 Control Protocol