Chapter 5: RS-232 Serial Interface
5. RS-232 Serial Interface
5.1 Connect a PC or Control System
For a complete list of commands, refer to the extended
Figure 5-1. RS-232 DB9 connector.
Table 5-1. RS-232 serial interface pinouts.
Pin | Defintion | |
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1 | Not used | |
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2 | TX | Transmitter |
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3 | RX | Receiver |
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4 | Not used | |
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5 | GND | Ground |
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6 | Not used | |
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7 | Not used | |
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8 | Not used | |
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9 | Not used | |
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5.2 RS-232 Protocol Commands
You can control the switch via the
The serial communication parameters are 9600 baud, 8 bit, No Parity, and 1 stop bit. This is often referred to as 9600 8N1. When the unit recognizes a complete command, it will perform the requested action. There is no delimiter character required.
0 = Enter the number
O = Enter the letter
NOTE: Make sure you use the correct keys for letter “O” and number “0.”
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