4
2
Physical connection
Form of the connector for the RS-232C equipped with MDS, name of the pins and the cables for
connection are mentioned in this section.
2-1
Form of the connector and name of the pins
D-Sub9 male pin is used in MDS-E12/E11/52 at the RS232C connector.
The names of pins are shown as below.
Among them, the signal lines of 2:RXD, 3:TXD and 5:GND are connected to MDS.
4:DTR is connected to 6:DSR and 7:RTS is connected to 8:CTS inside MDS.
2-2
Connection of the cables necessary for control
Connections as follows are the minimum requirements to control MDS from PC.
Pin number
Name
1
OPEN
2
RXD
3
TXD
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
OPEN
Connection cables to meet these requirements are commercially available as what are
called “cross cable” or “interlink cable” .
MDS name
Pin number
PC name
Pin number (D-Sub9 male pin)
(D-Sub25 female pin)
RXD
2
←→
TXD
3
2
TXD
3
←→
RXD
2
3
GND
5
←→
GND
5
7