Moxa Technologies CP-118EL User Manual download pdf (Page 72)

PCI Express Board User's Manual Driver Installation: Windows XP/2003

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data interactively, send patterns periodically, and transfer files using ASCII, XMODEM, YMODEM, ZMODEM,

and KERMIT protocols.

To run Terminal Emulator, click Start

 Program  PComm Lite  Terminal Emulator.

RS-485 Programming

If you are using your CP-118EL Series board for RS-485 applications, in addition to reading this section, you

should also refer to the “Connection Cables and Cable Wiring” chapter for more details about using RS-485.

The CP-118EL Series supports 2-wire half-duplex RS-485 and 4-wire full duplex RS-485 communication. Ports

configured for 2-wire RS-485 use the Data+ and Data- pins for both transmitting and receiving data. Moxa’s

own ADDC™ (Automatic Data Direction Control) technology is used to switch between transmission and

reception.

ADDC™

ADDC™ is the best method for switching between transmission and reception when using 2-wire RS-485.

When using ADDC™, additional code is not required to switch between data transmission and reception, since

the board’s built-in intelligent hardware mechanism automatically manages the switching mechanism. RS-485

programming using ADDC™ mode is just as simple and straightforward as RS-232 or RS-422 programming.

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Moxa Technologies CP-118EL User Manual Page 72