一个用于测试ABB变频器通讯的小工具，在调试Abb变频器RS485通讯时很有帮助。它可以读写所用的寄存器。-a test for ABB small inverter communication tools, Debugging badly in communication RS485 converter helpful. It can read and write by the Register.

一个摄像机镜头控制程序，RS485接口，协议为PELCO_d和PELCO_P自动识别，速率1200/2400/4800/9600四种，可实现远距离调镜头，镜头支持类型：直流和步进电机两种，可通过P1.0口选择，我使用的CPU型号为STC12C11F系列-A camera lens control program, RS485 interfaces, protocols for PELCO_d and PELCO_P automatic identification, rate 1200/2400

modsim32 is a modbus protocol simulator on windows platform with serial RS232 or RS485 connection to your laptop/desktop.

可燃485总线式气体检测系统代码...对从事气体检测仪表行业技术人员有借鉴意义，气体传感器处采用的跟踪滤波算法值得一观！-485 combustible gas detection system code ... to engage in gas detection instrumentation industry technicians have referential significance, gas sensors at the use of the tracking filter al