Advantech IPPC-9120, IPPC-9150 user manual CPU Installation, COM-port Interface

3.2 CPU Installation

You can install a Pentium® III CPU up to 850 MHz or Celeron ™ CPU up to 700 without setting any frequency ratio or voltage.

3.3 COM-port Interface

The IPPC-9120/9150 provides four serial ports (COM1, 3, 4: RS-232;

COM2: RS-232/422/485) in one COM port connector.

3.3.1 COM2 RS-232/422/485 setting (JP3, JP4, JP5)

COM2 can be configured to operate in RS-232, RS-422, or RS-485 mode. This is done via JP3, JP4 and JP5.

Table 3-3: COM2 RS-232/422/485 setting (JP3, JP4)

*RS-232 RS-422/485

2

JP4

1

2

JP3

1

62

JP4

51

6	2
5	JP3
	1

6

5

6

5

* default setting

Table 3-4: COM2 RS-232/422/485 setting (JP5)

*RS-232				RS-422				RS-485
2	4	6	2		4	6	2		4	6

1 3 5 1 3 5 1 3 5

* default setting

The IRQ and the address ranges for COM1, 2, 3, and 4 are fixed.

Chapter 3 Jumper Settings and Connectors 35