531X123PCHACG1 通用电源连接卡

531X123PCHACG1 通用电源连接卡

531X123PCHACG1 通用电源连接卡

控制位的控制方式可以有下述几种：

1、一个任务完成后计时，时间到，启动下一个通信任务。这里的时间原则上是不同的。这种方法最为灵活，但是就是程序量大。

2、同一计时，在不同的时间设置不同的通信任务控制位=1。这种方式的优点是逻辑简单，缺点是遇到超时可能会丢失任务，而且程序量也不小。

3、位定时左(右)移动，程序量小，简单。缺点是遇到超时可能会丢失任务。实际上在任务比较多（>30）时，连续方式和上述第一种方法也差不太多。这是个账算事。

发送接收报文一般按字节计算，每字节加起始位、停止位，一般是10位，停止位是两位时每字节是11位，再加一个校验位，最大12位。

531X123PCHACG1 通用电源连接卡

Control bits can be controlled in the following ways:

1, after a task is completed, time is up, start the next communication task. Time here is different in principle. This method is the most flexible, but it is a lot of procedures.

2. At the same time, set different communication task control bits =1 at different times. The advantage of this method is that the logic is simple, the disadvantage is that the task may be lost when encountering a timeout, and the amount of programs is not small.

3, bit timing left (right) movement, small program amount, simple. The disadvantage is that you may lose tasks when encountering timeouts. In fact, when there are more tasks (>30), the continuous method is not much different from the first method above. It's a matter of accounting.

Each byte contains 10 bits of start bit and 10 bits of stop bit. If the stop bit is two bits, each byte contains 11 bits and one check bit is added. The maximum number of bytes is 12 bits.