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SERIAL terminal connection
The SERIAL terminal conforms to the RS-232C interface
specification, so that the Display can be controlled by a
computer which is connected to this terminal.
Notes
●
The serial conversion cable is supplied with this unit.
2
1
4
SERIAL
SERIAL
IN
OUT
3
5
SERIAL
SERIAL
IN
OUT
6
SERIAL
IN
RS232 convert cable (supplied)
PC
RS232 Daisy Chain Cable (supplied)
First display
Second display
Third display
SERIAL
OUT
Pin assignments and signal names for SERIAL
Terminal
1
2
6
7
Pin No.
1
NC (no connection)
2
RXD
3
TXD
4
Not used
5
GND (Ground)
6
Not used
7
RTS
Shorted in this unit
8
CTS
NC (no connection)
9
These signal names are computer specifications.
Communication parameters:
Signal level: RS-232C compliant
Synchronization method: Asynchronous
Baud rate: 9600 bps
Parity: None
Character length: 8 bits
Stop bit: 1 bit
Flow control: None
Basic format for control data
The transmission of control data from the computer
starts with an STX signal, followed by the command,
the parameters, and lastly an ETX signal in that order.
If there are no parameters, no parameter signal is
sent.
STX
C1
C2
C3
:
Start (02h)
Colon
3-character command
(3 bytes)
3
4
5
8
9
Signal Name
P1 P2 P3 P4 P5
ETX
End (03h)
Parameter(s)
English
23
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