Support the Siemens S7-200 / 300/400 PLC communications. The signal partially isolated by high-speed optical coupling. | Support for MPI and DP multi-master communication, support Siemens touch screen. Support 840D CNC system programming. | The installation of Siemens original driver, without generating serial, USB direct selection. Support for multi-master communication 200PLC and ET200 communications, and PPI. | Support WIN7 32 and 64 series, support V5.5 software (no need to install the drive in V5.5). Support a variety of high-end communication Siemens PLC. | There are soft shell protection, anti-pressure, drop. The choice of PTC resettable fuse, overvoltage, overcurrent, short circuit case well protected internal circuitry.