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Microsoft Advantech UNO-3074 Benutzerhandbuch

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Chapter 2  
2.3.6 IRQ, I/O Address and Transmission Rate Setting
The IRQ and I/O address range of COM3 and COM4 are listed below:
• COM3: 3E8
H
, IRQ10 (Independent IRQ), IRQ10 (Share IRQ)
• COM4: 2E8
H
, IRQ5 (Independent IRQ), IRQ10 (Share IRQ)
• Vector address for share IRQ: 1D0
H
You can set “Share IRQ” or “Independent IRQ” by the first switch of SW3 
(Refer to Table 2.2 below).
Table 2.1: Auto Flow & RS-422 Slave/Masters
SW2 DIP Switch Setting
COM Port
Mode Selections
COM3
RS-422: Slave mode
RS-485: Auto flow control
COM4
RS-422: Slave mode
RS-485: Auto flow control
COM3
RS-422: Master mode
RS-485: N/A
COM4
RS-422: Slave mode
RS-485: Auto flow control
COM3
RS-422: Slave mode
RS-485: Auto flow control
COM4
RS-422: Master mode
RS-485: N/A
COM3
RS-422: Master mode
RS-485: N/A
COM4
RS-422: Master mode
RS-485: N/A