查看“MITX-6987-COM”的源代码

[[文件:MATX-6987 COM1_2，COM3-COM6，COM7-10，J4.jpg|600px|缩略图|MATX-6987 COM1_2，COM3-COM6，COM7-10，J4]]
===== COM1_2： =====
{| class="wikitable"
|-
! Pin !! COM1 !! COM2 
|-
| 1 || DCD# || HDCD#2TX-DATA-
|-
| 2 || SIN || HSIN2TX+DATA+
|-
| 3 || SOUT || HSOUT2RX+
|-
| 4 || DTR# || HDTR#2RX
|-
| 5 || GND || GND
|-
| 6 || DSR# || DSR#
|-
| 7 || RTS# || RTS#
|-
| 8 || CTS# || CTS#
|-
| 9 || RI || RI
|}

===== COM2 跳线功能设置（J1，J2，J3）： =====
:{| class="wikitable"
|-
|colspan=2|COM2  RS232 PORT ||colspan=2|COM2  RS422 PORT   ||colspan=2|COM2  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-COM6： =====
{| class="wikitable"
|-
! 信号名称 !! Pin !! Pin !! 信号名称 
|-
| DCD#3 || 1 || 2 || DSR#3
|-
| SIN3 || 3 || 4 || RTS#3
|-
| SOUT3 || 5 || 6 || CTS#3
|-
| DTR#3 || 7 || 8 || RI#3
|-
| GND || 9 || 10 || COM_PIN10
|-
| DCD#4 || 11 || 12 || DSR#4
|-
| SIN4 || 13 || 14 || RTS#4
|-
| SOUT4 || 15 || 16 || CTS#4
|-
| DTR#4 || 17 || 18 || RI#4
|-
| GND || 19 || 20 || COM_PIN10
|-
| DCD#5 || 21 || 22 || DSR#5
|-
| SIN5 || 23 || 24 || RTS#5
|-
| SOUT5 || 25 || 26 || CTS#5
|-
| DTR#5 || 27 || 28 || RI#5
|-
| GND || 29 || 30 || COM_PIN10
|-
| DCD#6 || 31 || 32 || DSR#6
|-
| SIN6 || 33 || 34 || RTS#6
|-
| SOUT6 || 35 || 36 || CTS#6
|-
| DTR#6 || 37 || 38 || RI#6
|-
| GND || 39 || 40 || COM_PIN10
|}

===== J4： =====
{| class="wikitable"
|-
! Pin !! 信号名称 
|-
| 2-4 || +5V
|-
| 4-6 || +12V
|}