IR 220LN: Instantly Covert RS232 Cable to IR, Without Special IR SW!

No SW Modification Required: Single IR Speed Using IR220LN

You may use exactly the same RS232 protocol software you have now if you use one each of IR220LN on each side of the two communicating devices. You can select one of the following IR speeds; 9.6K, 19.2K, 38.4K, 57.6K, 115.2K bps as fixed IR speed for your application.

Replace RS232 Serial Cable with IR

ACTiR-220L/L+ may be used to replace the RS-232 cable without IrDA protocol if the following restrictions are applied:

(a) DTR and RTS must be used to power the IR220L/L+ and to set up the data rate as described in (3) and (4) above. They cannot be used for handshaking, flow control, or other proposes.
(b) IR220L/L+ will automatically block the receiver when it is transmitting. However, it is prudent to flush the receiver register, FIFO, and/or buffer when switching from transmitting to receiving.
(c) Full-duplex operation is not possible. XON/XOFF software flow control cannot be used. (This is due to the fact that the transmitting party cannot receive the XOFF while it is transmitting.) Other kind of half-duplex compatible software flow control (or no flow control at all) must be used.
(d) Error rate will depend on the ambient EM and light noise level. IR path may also be blocked accidentally by the user. Software error checking and recovering are recommended.

Details of it and implementation example are available from ACTiSYS.

You May Modify RS232SW to Get Multiple IR Speeds: IR220L/L+ Programming

ACTiR 220L or IR220L+ is a serial port IR converter for IrDA-1.0 (9.6K-115.2Kbps). It converts RS-232 serial signals to/from IrDA Physical Layer compliant IR signals. Programming Guide is available.

ACTiR-220L: 9.6, 19.2, 57.6, 115.2K bps. ACTiR-220L+: 9.6, 19.2, 38.4, 57.6, 115.2K bps

Pin 1: NC
Pin 2: RxD (Received serial data) going to the host. Active +5V, inactive 0V (this is not RS-232,
but is compatible with most RS-232 receivers in the host).
Pin 3: TxD (Transmit serial data) from the host. Active +7 to +15V, inactive 0 to -15V (RS-232).
Pin 4: DTR (Data terminal ready) from the host. Active +7 to +15V, inactive 0 to -15V(RS-232).
Pin 5: Gnd (signal ground), Pin 6: NC
Pin 7: RTS (Request to send) from the host. Active +7 to +15V, inactive 0 to -15V (RS-232).
Pin 8: NC, Pin 9: NC