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5.2
RS-232C communication specification
External control via RS-232C is available. Connect control devices such as PCs and the MSD with a serial
communication cable, and then control the MSD and acquire status using commands. For character notations
of commands and configuring communication of serial terminal, see ASCII codes and "7.10 RS-232C",
respectively.
Compliance standard
Baud rate
Data bits
Parity check
Stop bit
X parameter
Flow control
Delimiter
Communication pattern
RS-232C
connector
1
6
D-sub9 pin (male)
(MSD-804FD rear panel)
[Table 5.1] RS-232C communication specification
RS-232C
4800, 9600, 19200, 38400 [bps]
8, 7 [bit]
None, even, odd
1, 2 [bit]
Invalid
None
CR LF (Carriage return and line feed, 0D and 0A in hex)
Full duplex
MSD-804FD side
Pin#
1
5
2
3
4
5
9
6
RTS: Request to Send
7
8
9
[Fig. 5.4] RS-232C connector/cable specification
Signal
NC: No connection
RD: Received Data
TD: Transmitted Data
NC: No connection
GND: Ground
NC: No connection
CTS: Clear to Send
NC: No connection
22
MSD-804FD User's Guide
Control unit side
Signal
Cross
NC
cable
RD
TD
NC
GND
NC
RTS
CTS
NC
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