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 | |||||||||
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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
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 | |
(3) | Baud rate | 9600 bps |
(4) | Data length | 8 bits |
(5) | Parity | Odd |
(6) | Stop bit | 1 bit |
(7) | Communication code | Hex |
39