2.1.2 RS-232C connector
RS-232C pin assignments:
RS-232C
connector
1
6
D-sub 9 Pin male
(Rear panel)
2.1.3 Specification of RS-232C communication
Compliant standard
Baud rate
Data bit
Parity check
Stop bit
X parameter
Flow control
Delimiter
Communication method
Pin#
NC
1
5
RD
2
TD
3
NC
4
GND
5
9
NC
6
RTS
7
CTS
8
NC
9
[Fig. 2.3] RS-232C connector
[Table 2.1] RS-232C specification
RS-232C
4800, 9600, 19200, 38400 [bps]
7, 8 [bit]
None, even, odd
1, 2 [bit]
Invalid
None
CR LF (Carriage return and line feed, 0D and 0A in hex)
Full duplex
MSD
Signal
(Not Connected)
(Received data)
(Transmitted data)
(Not Connected)
(Ground)
(Not Connected)
(
)
Request to Send
(Clear to Send)
(Not Connected)
MSD-501/502 Command Guide
Control Unit
Signal
Cross
NC
Cable
RD
TD
NC
GND
NC
RTS
CTS
NC
7