![](/images/new-backgrounds/1195573/19557349x1.webp)
Table 2.1: Auto Flow & RS-422 Slave/Masters
SW2 DIP Switch Setting | COM Port | Mode Selections |
|
|
|
| COM3 | |
|
|
|
|
| |
|
|
|
| COM4 | |
|
|
|
|
| |
|
|
|
| COM3 | |
|
|
|
|
| |
|
|
|
| COM4 | |
|
|
|
|
| |
|
|
|
| COM3 | |
|
|
|
|
| |
|
|
|
| COM4 | |
|
|
|
|
| |
|
|
|
| COM3 | |
|
|
|
|
| |
|
|
|
| COM4 | |
|
|
|
|
| |
|
|
|
2.3.6IRQ, I/O Address and Transmission Rate Setting
The IRQ and I/O address range of COM3 and COM4 are listed below:
•COM3: 3E8H, IRQ10 (Independent IRQ), IRQ10 (Share IRQ)
•COM4: 2E8H, IRQ5 (Independent IRQ), IRQ10 (Share IRQ)
•Vector address for share IRQ: 1D0H
You can set “Share IRQ” or “Independent IRQ” by the first switch of SW3 (Refer to Table 2.2 below).
15 | Chapter2 |