The IB1000, IB1002, and IB1003 interface boards provide 4 RS232 ports:
| • | The IB1000 has 4 non-isolated RS232 ports. |
| • | The IB1002 has 4 non-isolated universal ports that can work in RS232, RS422, and RS485 modes. |
| • | The IB1003 has 4 isolated universal ports that can work in RS232, RS422, and RS485 modes. |