查看“EMB-3560-COM”的源代码

===== COM_DB引脚定义 =====
:{| class="wikitable"
|-
! 信号名称 !! colspan=2|Pin  !! 信号名称 
|-
| NC || 1 || 2 ||  M40_COM_RX
|-
| COM0_RXD || 3 || 4 || M40_COM_TX
|-
| COM0_TXD || 5 || 6 || NC
|-
| NC || 5 || 6 || NC
|-
| GND || 5 || 6 || GND
|}

===== COM1引脚定义 =====
:{| class="wikitable"
|-
! 信号名称 !! colspan=2|Pin  !! 信号名称 
|-
| DATA- || 1 || 2 || NC
|-
| DATA+/RX  || 3 || 4 || RTS
|-
| TX || 5 || 6 || CTS
|-
| NC || 7 || 8 || NC
|- 
| GND || 9 || 10 || GND 
|}

====== COM1功能选择跳冒设置(J2、J3座子) ======
:J2、J3 跳线用来设置 COM1的传输模式, COM1支持 RS232/RS485 两种传输模式,您可以根据您自身的需求来选择设置。
:{| class="wikitable"
|-
|colspan=2|COM AS RS232 PORT ||colspan=2|COM AS RS485 PORT
|-
| J3 || 1-2 || J3 || 3-4,5-6 
|-
| J2  || 1-3,2-4 || J2 || 3-5,4-6
|}

===== COM2、3引脚定义 =====

COM:
:{| class="wikitable"
|-
! 信号名称 !! colspan=2|Pin  !! 信号名称 
|-
| NC || 1 || 2 || NC
|-
| RXD  || 3 || 4 || NC 
|-
| TXD || 5 || 6 || NC
|-
| NC || 7 || 8 || NC
|- 
| GND || 9 || 10 || GND 
|}