Originally my device used three wires (TxD, RxD and GND) for cabling communication. Can I use your 100s to replace the cable?
: Yes, you can. But please take care of the wiring of some signals, such as DSR CTS DTR and RTS. 100s uses two signals, RTS and CTS, for the flow-control between it and your device. Please note that we are not talking about the IrDA flow control between two IR devices, which is done by TinyTP protocol and IrLAP. 100s uses DTR and RTS (true=high level) to indicate that it is POWER ON and able to receive data and your device should use DSR and CTS to indicate that. Because your device does not use the two signals so that the communication program may have no Flow-control or use XON/XOFF (software handshaking). Anyhow you must pull up the two signals DSR and CTS to high and leave another two inputs DTR and RTS not-connected. Q: Is the RS-232 communication speed setting for IR communication? A: No. It is for the RS-232 communication between 100s and your device. The real speed of IR communication has nothing to do with it. It can be higher or lower than the RS-232 speed. The IR communicati
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