Serial Port Specification
Figure 10 and the table below provide the specification of the 9- pin serial port located on the RangeLAN2 Serial Adapter. The Serial Adapter is wired as a DCE (Data Communication Equip- ment), like a modem.
The unit is designed to connect directly to a DTE (Data Terminal Equipment), such as a computer or dumb terminal, using a straight-through RS-232 cable. If your application requires that the Serial Adapter be connected to another DCE, use a null modem cable or a straight-through cable with a null modem adapter, which will cross the transmit and receive pins so that the DCEs can communicate with one another.
Pin Number | Serial Pin Function |
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pin 1 | CD (Carrier Detect) |
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pin 2 | TXD (Transmit Data) |
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pin 3 | RXD (Receive Data) |
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pin 4 | DTR (Data Terminal Ready) |
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pin 5 | SG (Ground) |
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pin 6 | DSR (Data Set Ready) |
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pin 7 | RTS (Request to Send) |
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pin 8 | CTS (Clear to Send) |
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pin 9 | RI (Ring Indicator) |
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