查看“MATX-6550-COM”的源代码

[[文件:MATX-6550-COM1_2、KCOM1 -KCOM4.jpg|600px|缩略图|MATX-6550-COM1_2、KCOM1 -KCOM4]]
===== COM1： =====
:{| class="wikitable"
|-
! 信号名称 !! Pin !! Pin !! 信号名称
|-
| DCD || 1 || 2 || SIN
|-
| SOUT || 3 || 4 || DTR
|-
| GND || 5 || 6 || DSR
|-
| RTS || 7 || 8 || CTS
|-
| RI || 9 ||   ||   
|}

''' COM2： '''
:{| class="wikitable"
|-
! 信号名称 !! Pin !! Pin !! 信号名称
|-
| NC || 1 || 2 || SIN
|-
| SOUT || 3 || 4 || NC
|-
| GND || 5 || 6 || NC
|-
| NC || 7 || 8 || NC
|-
| NC || 9 || 10 || NC
|}

''' KCOM1-KCOM2： '''
:{| class="wikitable"
|-
! 信号名称 !! Pin !! Pin !! 信号名称
|-
| DCD/485TX- || 1 || 2 || NC
|-
| RXD/485TX+ || 3 || 4 || RTS
|-
| TXD || 5 || 6 || CTS
|-
| NC || 7 || 8 || NC
|-
| GND || 9 || 10 || GND
|}

* KCOM1、KCOM2 跳线功能设置（J5，J6，J7，J8）:
:{| class="wikitable"
|-
! colspan=2|KCOM1 AS RS232  !! colspan=2|KCOM2 AS RS232  !! colspan=2|KCOM1 AS RS485  !! colspan=2|KCOM2 AS RS485
|-
| J6 || 1-3  2-4 || J8 || 1-3  2-4 || J6 || 3-5  4-6 || J8 || 3-5  4-6
|-
| J5 || 1-2 || J7 || 1-2 || J5 || 3-4  5-6 || J7 || 3-4  5-6
|}

''' KCOM3-KCOM4： '''
:{| class="wikitable"
|-
! 信号名称 !! Pin !! Pin !! 信号名称
|-
| NC || 1 || 2 || NC
|-
| RXD || 3 || 4 || RTS
|-
| TXD || 5 || 6 || CTS
|-
| NC || 7 || 8 || NC
|-
| GND || 9 || 10 || GND
|}