Shimadzu 503-61000-01, Installation Manual, Page: 177 / 208

E.9 DR system - MUX communication
Mobile DaRt Installation Manual
E-xxii
i
Message Format
The communications protocol is described below.
Supports a text block from STX to BCC of variable length up to 127 bytes.
The command format appears below.
S
T
X
Application message
E
T
X
B
C
C
Fig. 11 Command format
STX: 0X02
ETX: 0X03
BCC: horizontal parity
<Exclusive OR to ETX (excluding STX)>
Error Processing
Parity check on each error detected data
(Horizontal parity checks on each message unit.)
Physical Layer
1.
Electrical specifications RS-232C
2.
Transmission mode: half duplex, asynchronous
(1) Start bit 1 bit
(2) Data 8 bit
(3) Parity 1 bit (even)
(4) Stop bit 1 bit
3.
Transmission rate: 4800 bps
4.
Communications specifications
Connect to D-SUB9pin (Female) Cross-type RS232C cable.
Fig. 12 Location of unit side Dsub-9 pin (male)
MAX.127 byte
FG
⑨ ② ③ ⑦ ⑧ ⑥
RX TX RTS CTS DSR
④ ⑤
DTR GND