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Chapter 3 System Setup 31
3.5.2 COM3/COM4 pin 9 output setting (J7)
Table 3.5: Serial port default settings
Port Address Range Interrupt
COM1 3F8 ~ 3FF IRQ4
COM2 2F8 ~ 2FF IRQ3
COM3 3E8 ~ 3EF IRQ10
COM4 2E8 ~ 2EF IRQ5
Table 3.6: COM3/4 pin 9 settings (J7)
*Normal operation +5 V output +12 V output
*default setting