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sjc3bc
- 功能: 1、作为下位机采集8255数据并将此数据通过通讯送出, 2、采集数据为BCD,先转换成二进制,处理后再转换成BCD 3、通讯采用方式3,多机通讯,上位机发地址时TB8=1,其他TB8=0 下位机SM2=1,RB8=1时产生中断后使SM2=0收发数据,结束后SM2=1-Features: 1, as under the 8255-bit machine data collection and communications sent through this data, 2
sjc3a
- 功能: 1、作为主机通讯采集两路下位机数据并将此数据通过8255送出(十路水位值) 并计算水头送STC板 2、采集数据为BCD码制,先转换成二进制,处理后再转换成BCD 3、通讯采用方式3,多机通讯,上位机发地址时TB8=1,其他TB8=0 下位机SM2=1,RB8=1时产生中断后使SM2=0收发数据,结束后SM2=1 在此系统中本机硬件地址要设为0-Features: 1, as the host of two-way communication acquisit
chuankou
- 串口点对点通信 RS485点对点通信 只要稍加修改再加上SM2就可实现一点对多点通信-Serial RS485 point to point communication as long as the point to point communication together with SM2 can be slightly modified to achieve a multi-point communication
TC35-SM2
- 实现TC35模块读写功能的MCS51单片机测试C程序代码。-TC35 module to read and write functionality the MCS51 test C code.
PC-1
- 用PC机与多个51单片机通过RS232进行通讯。在多机通讯中,要保证主机与所选择的从机实现可靠的通信,必须保证串口具有识别的功能。在串行口控制寄存器SCON中 有一位叫做SM2,就是为了多机通讯而设置的控制位-Using a PC and a number of 51 single-chip RS232 communication. In multi-machine communication, to ensure that the host and the selected slave t