延迟启停,使用内部计时器，可控制多台电机-Delayed start and stop, using the internal timer can control multiple motors

RS232转rs485串口与变频器控制上位机软件，能够选择当前串口，实现变频器的读、写，运行、停机等操作-RS232 to rs485 serial port with the frequency converter control PC software, be able to select the serial port, the realization of frequency converter to read, write, run, stop operation, etc

S7-300PLC控制ACS800变频器程序，通过Profibus-DP协议实现变频器的控制，包括常用的调速、启停数据传输，远程监控等功能-S7-300PLC ACS800 drive control program for control of the inverter via Profibus-DP protocol, including the commonly used speed, start and stop data transmission, remote monitoring