Wiring Scheme
Most of the pins from the RJ-45 plug should be connected to a normal RS-232 interface configured for an asynchronous communication mode of 9600 baud with 8 data bits, 1 stop bits and no parity. Hardware handshaking for flow control (CTS as an input to Slave) is not required to support this protocol but is recommended. The equipment jack pinout for this jack is as follows:
| Pin | Description | Fitness Equipment (Slave) I/O |
|---|---|---|
| 1. | Audio Left | Input |
| 2. | Audio Right | Input |
| 3. | Rx | Input |
| 4. | Tx | Output |
| 5. | Voltage Source | Output |
| 6. | CTS Flow Control | Input |
| 7. | Signal Ground | N/A |
| 8. | Shield | N/A |
Pin positions are counted from 1 to 8 in a left to right direction looking into the RJ-45 socket with the locking tab facing down as shown in the following diagram:
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Read more about this topic: Communications Specification For Fitness Equipment
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