26: COMPUTER LINK COMMUNICATION
« FC4A MICROSMART USER’S MANUAL » 26-5
RS232C Connector Pinouts
Dimensions
RS232C Cable HD9Z-C52
AC Adapter
The RS232C/RS485 converter is powered by a 24V DC source
or an AC adapter with 9V DC, 350mA output capacity.
Pin No. Description
1 GND Frame Ground
2 TXD Transmit Data
3 RXD Receive Data
4 (RTS) Unused
5 (CTS) Unused
6 (NC) Unused
7 GND Signal Ground
8-25 (NC) Unused
113
1425
Note: Terminals 4 and 5 are connected together internally.
D-sub 25-pin Female Connector
110 mm (4.331")
10 mm (0.394")
132 mm (5.197")
3.6 mm
7 mm (0.276")
34 mm (1.339")
AC Adapter Jack
Mounting Bracket
5 mm
Rubber Feet
24.4 mm
3.6 mm
D-sub 25-pin Connector
ø4.5 mm hole × 2
142 mm
10 mm (0.394")
(0.142")
3.6 mm
(0.142")
(0.142")
3.6 mm
(0.142")
(0.197")
(0.961")
(5.591")
(0.177" dia.)
Note: When mounting the RS232C/RS485 converter
on a panel surface, remove the rubber feet; then
attach the supplied mounting brackets on the bottom
of the converter using screws.
Mounting Hole Layout
Connector for RS232C/RS485 Converter
D-sub 25-pin male connector
Description Pin No.
GND Frame Ground 1
TXD Transmit Data 2
RXD Receive Data 3
RTS Request to Send 4
CTS Clear to Send 5
DSR Data Set Ready 6
DCD Data Carrier Detect 8
DTR Data Terminal Ready 20
GND Signal Ground 7
Connector for Computer
D-sub 9-pin female connector
Pin No. Symbol
1 DCD
2 RXD
3 TXD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 RI
1.5m (4.92 ft.) long
9.5
ø2.1
ø5.5
Polarity
+
–
Dimensions in mm.
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