MSD-72 Series User’s Guide
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7.2.4 Connecting RS-232C cable
For RS-232C ports, 9-pin D-sub male pin or 3-pin terminal block can be used depending on the model you
use. Use the appropriate cables for the type of RS-232C port.
[Table 7.4] Connector types for RS-232C port
Part number
Number of RS-232C port
Connector types for RS-232C
MSD-7201UHD
2 ports
9-pin D-sub (male)
MSD-7202UHD
MSD-7203UHD
MSD-7204UHD
MSD-7201UHDTB
2 ports
3-pin terminal block
MSD-7202UHDTB
MSD-7203UHDTB
MSD-7204UHDTB
■
9-pin D-sub RS-232C ports
Use cross cable when you connect the MSD to PC.
The pin assignments of RS-232C port D-sub (9-pin) are following:
D-sub 9-pin
・
male
1
5
RS-232C connector
6
9
RxD
TxD
N.C.
DTR
DSR
N.C.
GND
RTS
CTS
Pin #
1
3
2
4
6
5
7
9
8
Signal
（
Receiving data
）
（
Sending data
）
（
Ground
）
（
Sending request
）
（
Receiving request)
（
Not used
）
（
Not used
）
（
Not used
）
（
Not used
）
[Figure 7.4] 9-pin D-sub connector pin assignments
■
3-pin Terminal block RS-232C ports
Fix RS-232C cable to the attached3-pin terminal block, and then connect it to the MSD.
IDK recommends using AWG 28 to AWG16 cable. The maximum peeling length is 7 mm (0.28 inch approx.)
Tx
Rx
GND
RS-232C T
ｘ
RS-232C Rx
GND
Up to 7 mm (0.28 inch approx.)
[Figure 7.5] Connecting RS-232C cable to 3-pin terminal block connector
