Yamaha RCX40, User Manual

Page: 324 / 388

7-
4
RS-232C interface
7
3. Communication specifications
3. Connection cable examples
a. Cable capable of hardware busy control
NC
RXD
TXD
NC
GND
NC
RTS
CTS
NC
1
2
3
4
5
6
7
8
9
Controller
DCD
RXD
TXD
DTR
GND
DSR
RTS
CTS
External device
b. Cable not using control wires
NC
RXD
TXD
NC
GND
NC
RTS
CTS
NC
1
2
3
4
5
6
7
8
9
Controller
DCD
RXD
TXD
DTR
GND
DSR
RTS
CTS
External device
* For signal wire layout on the external device, refer to the instruction manual for that
device.
3.2 Transmission mode and communication parameters
Transmission mode Full duplex
Synchronous system Start-stop synchronization
Baud rate [bps] 4800, 9600, 19200, 38400, 57600
Character length [bit] 7, 8
Stop bit [bit] 1, 2
Parity None, even, odd
RTS/CTS control Yes/No
Termination code CR, CRLF
XON/XOFF control Yes/No
Receive buffer 1024 bytes
Transmit buffer 1024 bytes
n
NOTE
1) Termination code
•
CR (carriage return)
Robot transmission:
Adds a CR code (0DH) to the end
of a line.
Robot receive:
Up to a CR code is handled as 1
line.
• CRLF (carriage line
feed)
Robot transmit:
Adds a CR code and LF code
(0AH) to the end of a line.
Robot receive:
Up to a CR code is handled as 1
line and LF code is ignored.
2) Refer to “Timing chart” for XON/
XOFF control.