Toshiba TLP-510U Manuel de formation technique - Page 20
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5-15. RS-232C Control Method
Signals are connected to the RS-232C connector in a
straight format as shown in Table 5-15-1 RS-232C
connection signals. This is because a crossing connec-
tion is provided inside the unit. Communication condi-
tions are set to meet the conditions given in Table 5-15-2.
Table 5-15-3 shows the command list of RS-232C.
When transmitting the command, be always sure to keep
100 ms interval between each command. Moreover, the
process time is required for a while when turning the
power ON/OFF and/or selecting the input mode. So in
such cases, also be always sure to keep enough intervals
between the commands.
Item
Communication system
Communication type
Table 5-15-2 RS-232C communication conditions
Transmission speed 9600 baud, No parity, Data length 8 bit, Stop bit: 1 bit
STX (1 byte) + CMD (3 byte) + ETX (1 byte) = 1 block
STX is 02h, ETX is 03h, CMD is command string (Uppercase character)
Table 5-15-1 RS-232C connection signals
Pin No.
Signal name
2
RXD
3
TXD
4
DTR
5
S. G
6
DSR
7
RTS
8
CTS
Conditions
5-9
Signal content
I/O
Receive data
Transmit data
O
Data terminal ready
O
Signal ground
Data set ready
Transmission request
O
Transmission enable
I
I
I
I