Introduction
USB/PPI+ programming cable simulates USB port as traditional serial port (usually COM3), which enables existing programming software(STEP 7-MicroWin) to communicate through simulated traditional port and PLC devices.
The working power supply of this cable is from the USB port and PLC programming interface. The two-color LED on the converter box indicates data’s transceiving status.
USB/PPI+ is optoelectronic isolated,suitable for Siemens S7-200 series PLC,especially for the strong interfere and easily damaged communication interface industry scene.The safeguard in the circuit guarantees the safely running of the system.
USB/PPI+ principle and figure structure:
PIN |
Signal |
Description |
3 |
RxD/TxD+ |
Data signal B(RS485+) |
8 |
RxD/TxD- |
Data signal A(RS485-) |
7 |
P24V |
24V power positive |
2 |
M24V |
24V power negative(RS485 logic ground) |
signals definition of the RS485-Block (DB9M) of the USB/PPI+
Functions
System requirement
Please make sure your PC is IBM PC compatible and has the following system requirements before using the USB programming cable.
The setting of driver procedure
Please set the driver procedure according to the following steps:
If Windows does not show “Found New Hardware Wizardâ€, please click “Universal Serial bus controllers†in the hardware list of device manager, and choose the USB device with question mark. Click the right key of mouse and operate to update driver procedure.