查看“SHB-980-COM”的源代码

[[文件:SHB-980-COM1-COM2.jpg|600px|缩略图|SHB-980-COM1-COM2]]
===== COM1-COM2： =====
:{| class="wikitable"
|-
! 信号名称 !! Pin !! Pin !! 信号名称
|-
| DCD || 1 || 2 || DSR
|-
| SIN || 3 || 4 || RTS
|-
| SOUT || 5 || 6 || CTS
|-
| DTR || 7 || 8 || RI
|-
| GND || 9 || 10 || GND
|}

*当COM2设置为RS232/RS422/RS485时，其管脚定义如下：
:{| class="wikitable"
|-
! Pin !! RS232（默认） !! RS422 !! RS485
|-
| 1 || DCD || TX- || DATA-
|-
| 2 || DSR || NC || NC
|-
| 3 || RXD || TX+ || DATA+
|-
| 4 || RTS || NC || NC
|-
| 5 || TXD || RX+ || NC
|-
| 6 || CTS || NC || NC
|-
| 7 || DTR || RX- || NC
|-
| 8 || RI || NC || NC
|-
| 9 || GND || GND || GND
|-
| 10 || GND || GND || GND
|}