The PFB-G bus isolator is installed on the PLC side, and the communication line adopts a shielded twisted pair with a cross-sectional area of 0.22 mm2 or more.
In this case, a 120Ω termination resistor should be connected between the 3rd and 8th pins of the RS485 port of the cable (DB9 Male) to eliminate signal reflection. The maximum communication distance between the USB/PPI programming cable and the PLC can reach 2KM (9600bps). USB/PPI cable long distance communication: It should be noted here that the programming cable does not support the “USB” option of the local communication port setting in the programming software. Simply select the COM port in the programming software or other application software, and the next use is the same as the traditional RS232. For the installation method, please refer to the documentation on the driver CD, which will not be described here.Īfter the driver installation is completed, the COM port corresponding to the USB/PPI programming cable will appear in the device manager of Windows. These drivers are included on the CD that ships with the product. The USB/PPI programming cable needs to be installed with the USB device driver. Only one USB programming cable is supported per PC USB/PPI cable usage:
Support the maximum communication distance of 2KM (9600bps)ġ1. Baud rate: 9.6kbps standard baud rate automatically adaptsġ0. Fully compatible with USB V1.1 and USB CDC V1.1 specificationsĤ.USB bus power supply, current consumption is about 50mAĥ. Support USB/PPI programming software version: STEP7 Micro/WIN V3.2 and aboveģ. Support USB/PPI operating system: Windows2000/WindowsXP (WinNT4/95/98/Me/DOS is not supported)Ģ. USB/PPI cable characteristics and technical indicators:ġ. For industrial sites with high interference and easy to damage the communication port, opto-isolated USB/PPI+ programming cable is selected. The two-color LED on the converter box indicates the data transmission and reception status.
The working power is taken from the USB port and is not powered by the programming port of the PLC. The driver control running in the computer simulates the USB interface of the computer into a traditional serial port (commonly known as the COM port), thereby using various existing programming software, communication software, and monitoring software. It is a programming cable that provides serial connection and RS485 signal conversion and PPI protocol conversion via USB interface. USB/PPI cable is suitable for the Siemens S7-200 full range of PLCs.
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