External Control

Application

These specifications cover the communications control of the plasma monitor by external equipment.

Connections

Connections are made as described below.

plasma monitor

 

External equipment

 

e.g., Personal computer

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1)Connector on the plasma monitor side: EXTERNAL CONTROL connector.

Type of connector: D-Sub 9-pin male

No. Pin Name

1No Connection

2RXD (Receive data)

3TXD (Transmit data)

4DTR (DTE side ready)

5GND

6DSR (DCE side ready)

7RTS (Ready to send)

8CTS (Clear to send)

9No Connection

1

5

9

6

2)Connector on the external equipment side: Serial port (RS-232C) connector

See the specifications of the equipment that is to be connected for the type of connector and the pin assignment.

3)Wiring

Use a crossed (reverse) cable.

Wire the cable so that each pair of data lines cross between the two devices. These data line pairs are RXD (Receive data) and TXD (Transmit data), DTR (DTE side ready) and DSR (DCE side ready), and RTS (Ready to send) and CTS (Clear to send).

Communication Parameters

(1)

Communication system

Asynchronous

(2)

Interface

RS-232C

(3)

Baud rate

9600 bps

(4)

Data length

8 bits

(5)

Parity

Odd

(6)

Stop bit

1 bit

(7)

Communication code

Hex

36