查看“MITX-6957-COM”的源代码

[[文件:MITX-6957 COM1、COM2、COM3-6、COM7-10.jpg|600px|缩略图|MITX-6957 COM1、COM2、COM3-6、COM7-10]]
===== COM1： =====
:{| class="wikitable"
|-
! Pin !! 信号名称 
|-
| 1 || DCD 
|-
| 2 || RXD 
|-
| 3 || TXD 
|-
| 4 || DTR 
|-
| 5 || GND
|-
| 6 || DSR 
|-
| 7 || RTS
|-
| 8 || CTS 
|-
| 9 || RI 
|}

''' COM2： '''
:{| class="wikitable"
|-
! 信号名称 !! Pin !! Pin !! 信号名称 
|-
| DCD || 1 || 2 || DSR
|-
| RX || 3 || 4 || RTS
|-
| TX || 5 || 6 || CTS
|-
| DTR || 7 || 8 || RI
|-
| GND || 9 || 10 || COM_PIN10
|}

* COM2 跳线功能设置（J1、J2、J3）：
:{| class="wikitable"
|-
! Pin !! COM2 AS RS232 PORT !! Pin !! COM2 AS RS422 PORT !! Pin !! COM2 AS RS485 PORT
|-
| J1 || 1-3,2-4 || J1 || 3-5,4-6 || J1 || 3-5,4-6
|-
| J2 || 1-3,2-4 || J2 || 3-5,4-6 || J2 || 3-5,4-6
|-
| J3 || 1-2 || J3 || 3-4 || J3 || 5-6,7-8
|}

''' COM3-6/COM7-10： '''
:{| class="wikitable"
|-
! 信号名称 !! Pin !! Pin !! 信号名称 
|-
| DCD3/7 || 1 || 2 || DSR3/7
|-
| RXD3/7 || 3 || 4 || RTS3/7
|-
| TXD3/7 || 5 || 6 || CTS3/7
|-
| DTR3/7 || 7 || 8 || RI3/7
|-
| GND || 9 || 10 || COM_PIN10
|-
| DCD4/8 || 11 || 12 || DSR4/8
|-
| RXD4/8 || 13 || 14 || RTS4/8
|-
| TXD4/8 || 15 || 16 || CTS4/8
|-
| DTR4/8 || 17 || 18 || RI4/8
|-
| GND || 19 || 20 || COM_PIN10
|-
| DCD5/9 || 21 || 22 || DSR5/9
|-
| RXD5/9 || 23 || 24 || RTS5/9
|-
| TXD5/9 || 25 || 26 || CTS5/9
|-
| DTR5/9 || 27 || 28 || RI5/9
|-
| GND || 29 || 30 || COM_PIN10
|-
| DCD6/10 || 31 || 32 || DSR6/10
|-
| RXD6/10 || 33 || 34 || RTS6/10
|-
| TXD6/10 || 35 || 36 || CTS6/10
|-
| DTR6/10 || 37 || 38 || RI6/10
|-
| GND || 39 || 40 || COM_PIN10
|}

* COM电压选项插针（J9）：
:{| class="wikitable"
|-
! 设置 !! J9
|-
| 1-2 || +5V
| 2-3 || +12V
|}