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SECTION 2
Installation and Connections/Wiring
RS-232C Port
The method for connecting a CIDRW Controller or host device via the RS-232C port is explained here.
To the RS-232C port
• Connector
The RS-232C port of the Amplifier Unit is a D-SUB, 9-pin connector. The pin arrangement is shown
below.
Pin No.
Signal name
1
—
2
Receive data
3
Send data
4
—
5
Signal ground
6
—
7
Request send
8
Send enable
9
—
CIDRW System
32
User's Manual
Amplifier Unit
Amplifier Unit
To the RS-232C port
Symbol Signal direction
NC
—
RD
Input
SD
Output
NC
—
SG
—
NC
—
RS
Output
CS
Input
NC
—
CIDRW Controller
To ID port
Host
The connector rim has electrical continuity with the GR (frame
ground) terminal in the dedicated power supply connector.
Remarks
Not connected
Not connected
Not connected
Always ON during normal operation
Not connected
To the RS-232C port
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