当 编程器连接已经允许，通常的编程器通讯开始。（12 秒内编程器没有建立连 接，可以认为是编程器通讯丢失）。编程器可以经配置或串口设定 COMMREQ 发送新协议。 (SNP 从站协议不支持 的 COMMREQ 被拒绝)。如果收到新协议，直到断开编程器，其才起作用。

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