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USB ADAPTER CN: support PC USB to PROFIBUS/MPI/PPI communication

Product Introduction

USB Adapter CN is a high-tech adapter similar, support USB of computer to PROFIBUS/MPI/PPI communication, USB Adapter CN adopt power supply from USB port, use the low-power low voltage chip, even if the USB port power low down to 4V, it still can ensure the stable and reliable work of the adapter. RS485 interface(PROFIBUS/MPI/PPI) of USB Adapter CN is the standard interface as same as the CP5611/CP5512, the 6PIN and 5PIN of DB9F socket output 5VDC power which can supply the power for the termination resistors. Besides it can be used for S7-200/300/400 PLC,it also can be used for HMI,CNC etc other third party equipments, support long distance communication,allowed cable length meet the profibus standard.

The network type and baud rate which USB Adapter CN supports:

Transmission rate

MPI

PPI

PROFIBUS-DP

9.6Kbps

-

19.2Kbps

45.45Kbps

-

-

93.75Kbps

-

-

187.5Kbps

500Kbps

-

-

1.5Mbps

-

Main Technical Specifications:                                                                                                        

  • Compatible with USB V1.1 and USB V2.0 specifications,connect the USB port of PC to DP/MPI/PPI interface of S7 system.
  • Support PROFIBUS/MPI/PPI communication, auto bus protocol test
  • You can download the latest software from Siemens website to update the firmware for USB Adapter CN to get the latest function
  • Power supply from USB port, power consumption about 150mA,with over current and surge protection Opto-isolated voltage 1000VDC.
  • USB port has the anti-surging protection
  • RS485 interface has the anti-lightning and surging protector, Repeatability surge capacity: Ipp=100A(10/700us,4KV),meet the standard ITU-TK20/21、VDE 0433. ±15KV ESD protection.
    Support  long  distance  communication,the  largest  communication  distance  meet  the profibus standard
    With the power indicator, USB indicator, DP/MPI indicator.
  • One PC only support one USB Adapter CN
  • Can install the adapter on the S7-300/400PLC rail or 35MM standard rail.
  • Overall Size: 123mm×68mm×30mm(Length*Width*Height),with the mounting bracket
  • Working Temperature: -20~+75℃

Shape structure: 

USB Adapter CN Shape

USB Adapter CN installation

You can put the USB Adapter CN on your desk or install it on the rail of control cabinet.It has the mounting  bracket  accessory.User  can  self-make an Aluminum  board with thickness 1.5mm~2.5mm, then install the adapter on the S7-300/400PLC rail or 35MM standard rail.

Fix the bracket and Aluminum board on the S7-300 PLC rail

USB Adapter CN has been installed on the S7-300PLC rail

Fix the bracket and Aluminum board on the standard rail

USB Adapter CN has been installed on the standard rail

USB Adapter CN LED Indicator                                                                                                        

Indicator

Status

Light On

Flash

USB

Adapter is normally connected to PC

USB port has data transfer

PWR

Adapter  passed  the  self-test,  work
normally

hardware fault

DP/MPI

On line

DP/MPI/PPI port has data transfer

PROFIBUS/MPI/PPI interface                                                                                                            

RS485 interface of USB Adapter CN is DB9F socket,the signal array meets PROFIBUS/MPI/PPI standard,as shown in the following table:

Pin

Signal
name

Description

Input/Output

1

NC

No use

-

2

NC

No use

-

3

LTG_B

RS485 signal positive

Input/Output

4

RTS_AS

No use

-

5

M5V

RS485 signal ground and
5VDC power ground

Input

6

P5V

Output  Voltage,  5VDC/50mA,provide  the  power  for
termination resistors.

Output

7

NC

No use

8

LTG_A

RS485 signal negative

Input/Output

9

RTS_PG

No use

-

Shell

Shielding

Shield ground (chassis ground)

PROFIBUS/MPI/PPI interface connection cable                                                                             

There is a pc of 5 m cable attached with the adapter,its used to connect the USB Adapter CN and PLC,correspond to Siemens 6ES7 901-0BF00-0AA0,as shown below:

Long distance communication

USB Adapter CN power is provided by the USB port, voltage is +5VDC±15%,150mA,not from RS485 interface of PLC.Thus the adapter can also be used for the other DP/MPI/PPI interfaces without 24VDC power output.Besides the RS485 interface of USB Adapter CN is as same as Siemens CP5611/CP5512,you can insert the profibus connector to achieve the long distance communication,and provide the power for the termination resistors of profibus connector. Different baud rates allowed the largest communication distance meet the PROFIBUS standard,as shown in
the following table:

Baud Rate

The largest cable length (Meter)

9.6 to 187.5Kbps

1000

500Kbps

400

1.5Mbps

200

USB Adapter CN use the profibus connectors like CP5611/CP5512

Product Content                                                                                                                                

USB Adapter CN 1PC

Mounting bracket 1PC

USB connection cable 1PC, 2M.

MPI connection cable 1PC, 5M.

Driver CD 1PC

Operating System requirement                                                                                                        

The following operating system is required on the PC
Windows 2000
Windows XP Professional
Windows XP Home
Windows Server 2003 Standard Edition
Windows Vista
Windows 7

You  need  to  install  STEP7  software  for  S7-300/400PLC,  STEP7-Micro/WIN  software  for S7-200PLC when you use USB Adapter CN to communicate.For other devices like HMI,CNC to communicate,its also required to install the corresponding application softwares.

Start to use USB Adapter CN Install driver

After you install STEP7 or STEP7 Micro/WIN etc softwares on the PC,you still need to install the Siemens original PC_Adapter_USB driver, the driver is included in the CD. You also could download  the  latest  version  PC_Adapter_USB  driver  from  Siemens  website

Check whether the USB Adapter CN can work well after you install the driver,right click My computer->Property->hardware->device manager,plug the USB Adapter CN in the USB port of PC,device manager will appear a new device as shown in the following red box,which show the
hardware and driver work well

It will appear the USB option in the local connection of set PG/PC interface in the Step7 software after you finish installing the driver,and then choose this USB option.

Set PG/PC interface:
Run STEP7 or STEP7 Micro/WIN software,click Set PG/PC button and then it will show the following choice list:
- PC Adapter (Auto) (This option will be shown only after you install the STEP 7)
- PC Adapter (MPI)
- PC Adapter (PPI) (This option will be shown only after you install the 7-Micro/WIN)
- PC Adapter (PROFIBUS)

If it doesnt show the above list,please click; Select button to install or remove the interfaces. Select one interface in the list.click property, it will appear USB option in the local
connection, choose this USB option and then click OK.

In the next the connection between USB Adapter CN and DP/MPI/PPI interface of PLC is OK, and

you could do the downloading,uploading and monitoring operation.

STEP7 software setting when it communicates with MPI interface of S7-300/400PLC:             

Connect USB Adapter CN to MPI interface of S7-300/400CPU.

Enter Step7 software main interface(SIMATIC Manager),click Set PG/PC interface under

option ;menu to enter PG/PC setting interface.

1.Select PC Adapter(MPI), click property button to enter MPI interface parameters setting.

2.Click the top MPI option,set the adapter MPI interface parameter,choose the baud rate

187.5Kbps or 19.2Kbps or 1.5Mbps,this baud rate must be the same as the PLC MPI interface baud rate.If you dont know the PLC MPI interface baud rate,you could choose PC Adapter
(Auto) to check.Other parameters are default,click OK button to return the previous

menu,click OK to return the main interface.

3.Online test: After USB Adapter CN connects MPI interface of S7-300/400PLC and USB port of PC ,then click the red circled button in the main menu as follows and will appear the data in the red marked frame and show the online test is OK. And now all the settings are finished. Now you can
go on the work such as program download and upload, monitoring etc.

STEP7 software setting when it communicates with PROFIBUS-DP interface   of S7-300/400PLC:                                                   

Connect USB Adapter CN to DP interface of S7-300/400CPU.

Enter  Step7  software  main  interface(SIMATIC  Manager),click   Set  PG/PC  interface under

option menu to enter PG/PC setting interface.
1.Select PC Adapter(PROFIBUS), click property button to enter DP interface parameters setting.

2.Click the top PROFIBUS option,set the adapter PROFIBUS interface parameter,the baud rate which you choose must be the same as the PLC PROFIBUS interface baud rate.If you
dont know the PLC PROFIBUS interface baud rate,you could choose PC Adapter(Auto) to

check.Other parameters are default,click OK button to return the previous menu,click OK to return the main interface.

USB Adapter CN support PROFIBUS-DP/ Standard/ Universal(DP/FMS)/ User-defined

3.Online test: After USB Adapter CN connects DP interface of S7-300/400PLC and USB port of PC ,then click the red circled button in the main menu as follows and will appear the data in the red marked frame and show the online test is OK. And now all the settings are finished. Now you can go on the work such as program download and upload, monitoring etc.

STEP7 software setting when it communicates with S7-300/400PLC using the automatic bus

protocol test method

Whether USB Adapter CN connects the MPI interface or PROFIBUS interface of S7-300/400CPU, you could both use the automatic bus protocol   test method to communicate with PLC, this mothod can automatically test the PLC communication protocol and baud rate etc parameters.
1.Select PC Adapter(Auto) click property button to enter bus automatic test setting.

2.Click start network test button, then you will get the PLC network type and baud rate etc parameters after several seconds.

3.Online test: click the red circled button in the main menu as follows and will appear the data

in the red marked frame and show the online test is OK. And now all the settings are finished.

Now you can go on the work such as program download and upload, monitoring etc.

STEP7 Micro/WIN software setting when it communicates with PPI interface of S7-200PLC:  

USB  Adapter  CN  can  be  used  for  the  communication  of  Siemens  S7-200PLC  with multi-master PPI and advanced PPI,like CPU22X series PLC. For the earlier CPU21X series PLC,they cant communicate with USB Adapter CN because they dont support multi-master PPI and advanced PPI.
Connect USB Adapter CN to RS485 interface of S7-200CPU.

Enter  STEP7  Micro/WIN  software  main  interface,click  the  lower  left  corner   Set  PG/PC

interface button to enter the PG/PC setting interface.

1.Select PC Adapter(PPI),click property button to enter local connection and PPI interface parameters setting.

2.There is only USB option in the local connection,you cant change.

3.Click the top PPI option,set the adapter PPI interface parameter,the baud rate which you choose must be the same as the PLC baud rate.Other parameters are default,click OK button to return the previous menu,click OK to return the main interface.
You can see the parameters are fixed advanced PPI and multi-master PPI,you cant change


4.Online test: After USB Adapter CN connects RS485 interface of S7-200CPU and USB port of PC, click the communicate button in the lower left corner of main interface to enter searching PLC interface, double-click Double-click Refresh icon,then you can search out the PLC which is connected with USB Adapter CN, Select the PLC and then click OK to return the main interface.
Now you can go on the work such as program download and upload, monitoring etc.