查看“EMB-3680-COM”的源代码

[[文件:EMB-3680 COM1、COM2、COM3、COM4.jpg|600px|缩略图|EMB-3680 COM1、COM2、COM3、COM4]]
===== COM1： =====
{| class="wikitable"
|-
! Pin !! 信号名称 
|-
| 1 || DCD
|-
| 2 || SIN1
|-
| 3 || SOUT1
|-
| 4 || DTR
|-
| 5 || GND
|-
| 6 || DSR
|-
| 7 || RTS
|-
| 8 || CTS
|-
| 9 || RI
|}

===== COM2(RS232/422/485), COM3(RS232), COM4(RS232)（采用2×5 Header接口）： =====
{| class="wikitable"
|-
! Pin !! RS232 !! RS422 !! RS485  
|-
| 1 || DCD || TX- || DATA-
|-
| 2 || DSR || NC || NC 
|-
| 3 || RXD || TX+ || DATA+
|-
| 4 || RTS || NC || NC
|-
| 5 || SOUT || RX+ || NC
|-
| 6 || CTS || NC || NC
|-
| 7 || DTR || RX- || NC 
|-
| 8 || RI || NC || NC
|-
| 9 || GND || GND || GND
|-
| 10 || GND || GND || GND
|}

===== COM2 跳线功能设置（J16、J17、 J18）： =====
{| class="wikitable"
|-
|colspan=2|COM2  RS232 PORT ||colspan=2|COM2  RS422 PORT   ||colspan=2|COM2  RS485 PORT
|-
| J16 || 1-3  2-4 || J4 || 3-5  4-6 || J4 || 3-5  4-6
|-
| J17 || 1-3  2-4 || J5 || 3-5  4-6 || J5 || 3-5  4-6
|-
| J18 || 1-2 || J6 || 3-4 || J6 || 5-6  7-8
|}