GE DS200RTBAG1A模块控制器卡
算法中使用以下符号：-->数据传输CRC 16位CRC-16值i的AH高位字节的16位工作寄存器AL低位字节，j个循环计数器（+）逻辑异或运算符Di第i个数据字节（i=0到N-1）G 16位特征多项式=1010000000000001，删除MSbit，位序反转shr（x）右移（x的低阶字节的LSbit移位为进位标志，“0”移位为x的高阶字节的MSbit，所有其他位右移一个位置定时数据包同步由定时约束保持。接收设备必须测量字符接收之间的时间。如果三个半字符时间过去而没有新字符或完成则必须重置通信链路（即，所有从设备开始侦听来自主设备的新传输）。因此，在9600波特时，大于3.5×1/9600×10=3.65 ms的延迟将导致通信链路复位。
The following symbols are used in the algorithm: --> data transfer A 16 bit working register AL low order byte of A AH high order byte of A CRC 16 bit CRC-16 value i,j loop counters (+) logical exclusive-or operator Di i-th data byte (i = 0 to N-1) G 16-bit characteristic polynomial = 1010000000000001 with MSbit dropped & bit order reversed shr(x) shift right (the LSbit of the low order byte of x shifts into a carry flag, a '0' is shifted into the MSbit of the high order byte of x, all other bits shift right one location Timing Data packet synchronization is maintained by timing constraints. The receiving device must measure the time between the reception of characters. If three and one half character times elapse without a new character or completion of the packet, then the communication link must be reset (i.e. all slaves start listening for a new transmission from the master). Thus at 9600 baud a delay of greater than 3.5 × 1/9600 × 10 = 3.65 ms will cause the communication link to be reset.
