查看“AFC-954-COM”的源代码

[[文件:AFC-954-COM1，COM2.jpg|600px|缩略图|AFC-954-COM1，COM2]]
===== COM1、COM2： =====
:{| class="wikitable"
|-
! Pin !! RS232 !! RS422 !! RS485
|-
| 1 || DCD || TX- || DATA-
|-
| 2 || RXD || TX+ || DATA+
|-
| 3 || TXD || RX+ || NC
|-
| 4 || DTR || RX- || NC
|-
| 5 || GND || GND || GND
|-
| 6 || DSR || NC || NC
|-
| 7 || RTS || NC || NC
|-
| 8 || CTS || NC || NC
|-
| 9 || RI || NC || NC
|}