SD Logger
4
instruction manual[X519009-3]
13/28
<2020/03/03>
(
3
rd
edition
)
Ⅲ
Connection
1.
RS-232C cable connection
Check each signal so that there is no mistake in the connection of the RS-232C
connector. The connector pin assignments are as follows.
RS-232C
1
2
3
4
5
6
7
8
9
D-Sub 9pin male
(
View from connector mating surface
)
Pin No.
Name
Contents
Signal direction
1
NC
Not connected (Note 1)
L
og
g
er
S
ide
2
RXD
Received data
3
TXD
Send data
4
DTR
Data terminal ready, connected to pin 6
5
GND
Signal ground
6
DSR
Data set ready, connected to pin 4 (Note
1)
7
RTS
Transmission request (usually high
level, Note 3)
8
CTS
Transmission permission (not used,
note 4)
9
Unused (Note 2)
(
Use a cross cable when connecting to RS-232C on a PC.
)
(
For flow control using 7-pin RTS, refer to
「Ⅶ
Other functions / 3. Flow
control
」
.
)
(Note 1) Can be used as a terminal to turn the power on and off from the outside
by jumper settings. See
「Ⅶ
Other functions 2. Jumper switches
」
.
(Note 2) It can be used as a terminal to supply power from outside by jumper
setting. See
「Ⅶ
Other functions 2. Jumper switches
」
.
(Note 3) Can be controlled by script language.
(Note 4) Can be used to control the script language.