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CPU 315-2DP communication with PCS 7 using CP-342-5 card

Created by: Raul0905 at: 11/10/2008 6:26 AM (8 Replies)

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11/10/2008 6:26 AM	Rate (0)
Raul0905 Posts: 41 Rating: (0)	Hi all, I have CPU-315-2DP . i have to communicate (send & Receive )data between PCS 7 sysem(CPU not known) with the help of CP-342-5 card.pls guide me how to transfer data(to & fro). which r the instructions i have to use for that. and what r the configurartions i have to do? I have to send around 210 bytes and 150 bytes to recive. pls help me. Thanks in advance. Rahul
Raul0905 Posts: 41 Rating: (0)
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11/10/2008 6:54 AM	Rate (0)
Aret Posts: 2348 Rating: (265)	To get overview you can see http://support.automation.siemens.com/WW/view/en/21628388 Also takealookon http://support.automation.siemens.com/WW/view/en/15007089
Aret Posts: 2348 Rating: (265)
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11/10/2008 6:05 PM	Rate (0)
J_Bell Posts: 5822 Rating: (412)	Dear Raul0905, as I am not sure if you use DP or FDL I would just like to add a FDL Sample. The sample is rather complex, but I hope you fill find the simplicity in the FDL communication too. FDL communication with SDA service via PROFIBUS CPs and Send/Receive interface or for the AG_SEND / AG_RECV How do you program the communication blocks FC5 and FC6? I hope this may help. Best regards J_Bell
J_Bell Posts: 5822 Rating: (412)
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11/11/2008 5:51 AM	Rate (0)
Raul0905 Posts: 41 Rating: (0)	Hello sir, thank u for ur valuable reply. I am a programmer. and i just know about the hardware that i have to use to communicate between PCS 7 and my PLC (CPU315 -2DP). How i come to know that which protocol I have to use to send and receive data. i.e FDL or DP. how can I select. communication card is - CP-342-5 Lean
Raul0905 Posts: 41 Rating: (0)
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11/11/2008 10:47 AM	Rate (0)
J_Bell Posts: 5822 Rating: (412)	Dear Rahul, well this is a good question but I have one first. What interface are you using? Is it industrial Ethernet with a CP 343-1 Lean... or is it PROFIBUS, is itthe PROFIBUS CP 342-5? As soon as we know which Interface you have we can decide what your possibilities are. Best regards J_Bell
J_Bell Posts: 5822 Rating: (412)
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11/11/2008 11:47 AM	Rate (0)
Raul0905 Posts: 41 Rating: (0)	hello sir , It isPROFIBUS CP 342-5 Lean card. I also want to know settingto be done in thePC station. iewhat i have to take CP softnet , hardnet or using OPC . I dont understand how to select it? help Rahul
Raul0905 Posts: 41 Rating: (0)
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11/11/2008 1:15 PM	Rate (0)
J_Bell Posts: 5822 Rating: (412)	Dear Rahul, well, first of all... there is no PROFIBUS CP 342-5 Lean. The add-on "Lean" is only available for Industrial Ethernet. As you have a PROFIBUS CP 342-5 you may have 3 choices to choose from: Either: FDL Communication, DP Master / SlaveCommunication or S7 Communication. The easiest way for PCS7 would be to use S7 Communication on PROFIBUS. In this case you may only read or write data to the PLC CPU. A configured connection with WinCC would not work in this case because some services are being used in WinCC that prevent the CP from working. In this case, S7 Communication you do not have to do anything in the CPU, besides putting all information required by PCS7 to one DB maybe. This eases the communication and rises the performance. On PC side, as you use PCS7 you may need PROFIBUS Hardnet, because PCS7 is that expensive it should not be a big thing to spend some more on a CP 5613 A2 and S7-5613. You will have to put your PC Station to the Project your S7-300 is already part of. Than you have to configure a single sided connection formthe PC to thea unspecified node with the address of the PLCand you have to download the configuration with the updated Bus profile to both, the PLC and the PC. If you did that youmay create your variables... and so on. It is needless to say that this is no official way, because PCS7 does notsupportS7-300 at all. Good luck trying. Best regards J_Bell
J_Bell Posts: 5822 Rating: (412)
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11/12/2008 5:57 AM	Rate (0)
Raul0905 Posts: 41 Rating: (0)	sir, thanks for the valuable reply. I am sorry, its not a lean.( ethernet card is used for the wincc communication) I am little confuse on ur last line ,i.e. PCS7 does notr support 300. My project is having CPU 315-2DP and i want to read / write data with PCS& system CPU416-2DP V 6.1. u said that u should go for hardnet at PCS 7 end.what should i use at my end S7 300 side. Thanks. Rahul
Raul0905 Posts: 41 Rating: (0)
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11/12/2008 12:24 PM	Rate (0)
J_Bell Posts: 5822 Rating: (412)	Dear Rahul, I am sorry but Hardnet and Softnet are only components for the PC Station you use, not for the PLC. If you study the manual of PCS7 you will find that the S7-300 is not supported by some... I am not sure of how many features... of PCS7. This does not mean that you are not able to communicate between a S7-400 PLC and a S7-300 PLC on PROFIBUS. As you want to read and write Data by the S7-400 PLC from / to the S7-300 I would personally choose a single sided configured Connection from the S7-400 to the S7-300, Independent from the PCS7 System running on any PC you use. With this connection you may use PUT / GET Function blocks to do what you intend to do. Best regards J_Bell
J_Bell Posts: 5822 Rating: (412)
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