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Chapter 3 Jumper Settings and Connectors
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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
* default setting
Table 3-4: COM2 RS-232/422/485 setting (JP5)
*RS-232 RS-422 RS-485
* default setting
The IRQ and the address ranges for COM1, 2, 3, and 4 are fixed.
26
15
26
15
JP4
JP3
26
15
26
15
JP3
JP4
246
135
246
135
246
135