The indicator light on the s7200 programming cable PPI,
RX: Receive signal
TX: send signal
Category: how to
How does usb-sc-09 communicate with Mitsubishi 3U series PLC?
Mitsubishi PLC and computer programming software communication connection method.
1) The usb-sc-09 communication line driver must be installed.
2) Open the programming software, power on the PLC, connect the communication line,
3) Check the COM port number occupied by the communication line in the port bar of the Computer Device Manager.
4) Set the COM port number in the software online → transmission settings to the COM port number actually occupied by the communication line, and click OK.
5) In the software online → select plc write or plc read as needed.
S7-200 usb-ppi+ communication cannot read PLC information, display unknown number
Showing unknow is a problem with your programming line.
In fact, the software has found the PLC, the site: 1, the baud rate is 9.6kbps.
Your PLC site needs to be set to 1 (manually input or click to display the location of “unknow, 1, .96bps” is automatically set).
Driver for S7-200 USB-PPI programming cable
The interface of Siemens PLC is RS485, so why not use USB-485 cable directly, but use USB-PPI and USB-MPI cable?
1. PPI cable can be converted with a simple RS232-RS485 interface, but cannot meet the high-speed communication of 187.5K.
2. There is a protocol chip in the MPI programming cable, which cannot be converted using a simple RS232-RS485 interface.
3. Many people always bite RS485. In fact, it is two things, one is physical, and PPI and MPI are on the agreement.
What is a PC/PPI programming cable
The S7200 CPU uses RS485, and the COM port of the PC uses RS232. The electrical specifications of the two are not consistent and need to be matched by the intermediate circuit. PC/PPI is indeed a matching cable of RS485/RS232.
What is the meaning of PPI for “PPI cable” in PLC knowledge?
Point-to-point communication, communication supported by the Siemens S7-200 CPU.
In the Siemens S7-300 CPU, multipoint communication MPI (Multi-Point Interface) is often used.
What is the difference between Siemens programming cable USB-PPI and RS232-PPI?
One end of the USB-PPI is a nine-pin head connected to the PPI/MPI interface of the PLC, and the other end is a USB, and a Siemens driver is required. Usually after installing the software such as STEP7.
One end of the Rs232-PPI is connected to the PLC, and the other end is the port of RS232.
Is PC-PPI suitable for Siemens S7-200 driver software?
No need
If the USB PPI cable is required, the driver needs to be installed.
Is the RS232/PPI and PC/PPI cable of the Siemens S7-200 PLC the same cable?
RS232/PPI and PC/PPI
Is the same cable
There are two kinds of PC/PPI cables: USB/PPI and RS232/PPI.
Because the S7200 CPU uses RS485, and the COM port of the PC is usually RS232, the electrical specifications of the two are not compatible, and the intermediate circuit is needed for matching. RS232/PPI, just RS232 and RS485 conversion, there are also USB and RS485 conversion cables
Siemens PLCS7-200, programming line PPI can be used with USB interface
PPI programming cable, also known as the programming adapter, useful computer COM port, but also useful computer usb port.
What connect is to say, the usb port that converts computer is COM port, have this to turn a wire, mount drive to go, basically be aimed at notebook computer a lot of did not yo COM port is used. The two ends of the adapter are USB port and COM port respectively. And then using this line COM port, the adapter that connects to PPI’s COM port, program 200.
U port adapter, without anything, its own end is a USB port, directly connected to the computer on the line. The other end is the COM port, 9 true D head, connected to PLC.
Programming software is to choose COM port or USB port.
What is the difference between Siemens programming cable USB-PPI and RS232-PPI?
The interfaces of Siemens programming cables with usb-ppi and rs232-ppi are different.
Extension: Siemens programming cable for connecting Siemens PLC to computer, available in various models.
Type:
PC/TTY corresponds to Siemens product number :6ES5 734-1bd20,RS232 to Siemens S5 series PLC programming port (DB15) communication interface cable, 3m. RS232/ current loop interface for S5 series PLC programming software and monitoring system.
USB/PPIUSB interface Siemens s7-200 PLC programming cable, USB/PPI interface, 3 meters, with communication indicator light, corresponding to Siemens product number: 6ES7 901-3db30-0xa0, the maximum communication distance up to 2 kilometers.
USB/PPI+ isolation USB interface Siemens s7-200 PLC programming cable, USB/PPI isolation, 3 meters, with communication indicator light, corresponding to Siemens product number: 6ES7 901-3db30-0xa0, the maximum communication distance up to 2 kilometers.
PLC Cable 