2-3. Serial Connection
The TRP-C08S has one DB-9 male connector and a 4-PIN RS422/485 connector. The serial port is
configured as a DTE (data terminal equipment) device. All PC COM ports are DTE ports. A null
modem cable is required to make a connection between the PC COM port and the TRP-C08S
serial port. Straight through cable is required to connect the TRP-C08S serial port to a DCE device.
2-4. Power Connection (USB Internal Bus)
Direct power input from USB port.
2-5. USB Connection
The TRP-C08S has a USB B-Type connector which is fully compliant with USB 2.0, the full rate
speed up to 256Kbps.
2-6. RS485 Wiring
The RS-485 mode supports the Transmit and Receive channels using 2-wire half-duplex operation.
2-7. RS422 Wiring
The RS-422 mode supports 4 channels with full duplex operation for Receive, Transmit, the data
lines are in differential pairs.
