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connection CP443-5b and MPI to PC station using PCS7 environment

Created by: Oreca at: 12/9/2009 9:40 AM (4 Replies)

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12/9/2009 9:40 AM	Rate (0)
Oreca Platinum Member Joined: 3/14/2008 Last visit: 1/17/2025 Posts: 2161 Rating: (973)	Hello, I posted a message where I wanted to know how the hardware was configured. It is a project that is eight years old, where no backups are available (hardware and software need to be programmed again on existing parts) I know more now and I have a picture attached on how the hardware is connected, looking at the hardware in the plant. My question is1: What was the function of CP443-5basic and 2: Is this configuration a good one? how do I upgrade it? In that time PCS7 was used (version 3), but PCS7 can only work with Industrial Ethernet? There is no ethernet available whatsoever.... I'm a little bit confused about that... PCS7 will be used again. Also I have individual S7 programs for the S7-300 plc's. The S7-300 cpu's have a CP342-5 basic adapter and therefore functions as a slave?. Does that mean that I need to send and recieve signals from and to the S7-300 and S7-400, and then write my program in PCS7 to direct those signals? Thank you again! Attachment hardwareconfig_1.JPG (112 Downloads)
	If I could help you, you can use the RATE button. Thank you. Prospact Netherlands...your PCS7 and PCS neo Expert Topic: PCS7 Complete Overview
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12/9/2009 4:00 PM	Rate (0)
J_Bell Posts: 5822 Rating: (412)	Hello, well... let me try to answer your questions. 1. What is the function of CP 443-5 Basic? A. The CP 443-5 is a PROFIBUS CP to interface the S7-400 to a PROFIBUS network. The CP supports FDL Communication, FMS Communication and S7-Communication. 2. Is this configuration a good one? A. If you ask about the interfacing of the CP 443-5 to the PC I would say yes. It is a quite reliable connection and widely used, also especially with PCS7 nowadays. I know that PCS7 uses Ethernet between PC's as its standard interfacing... but PROFIBUS is on Plant-bus still an option. 3. The S7-300 CPU’s have a CP 342-5 adapter and therefore function s as a slave? A. Well... I would not rely on it, at least as long as I would not have checked the S7-300 projects at all. The CP 342-5 may be used as DP Slave, true. But it may also used for S7-Commcunation as server. As far as I remember the IM 467 should be able to do S7-Communication too... but if this is used here.... I do not know. As you see, there is a lot of guessing around. I hope you will find your way through the Jungle. Best regards J_Bell
J_Bell Posts: 5822 Rating: (412)
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12/9/2009 8:14 PM	Rate (0)
Oreca Platinum Member Joined: 3/14/2008 Last visit: 1/17/2025 Posts: 2161 Rating: (973)	Hello JBell, Thank you for your explanation.. In one s7-300 plc program, I have seen a function block: interface to scada. In there are data copied from DB'sto a specific DB. That specific DB isused as a buffer DB according to comment. Furthermore are in the program twoFC's: Recieve from DP module and Transmit to DB module. Another FC is named: Calls DP tx&rx and contains the following network: CALL "Transmit to DP Module" CPLADDR :=W#16#170 RECV :=P#DB85.DBX10.0 BYTE 32 NDR :=DB85.DBX1.0 ERROR :=DB85.DBX1.1 STATUS :=DB85.DBW2 DPSTATUS:="DP module buffer".STAT0[4] CALL "Receive from DP module" CPLADDR:=W#16#170 SEND :=P#DB85.DBX70.0 BYTE 32 DONE :=DB85.DBX5.0 ERROR :=DB85.DBX5.1 STATUS :=DB85.DBW6 I think that this answers the question that CP342-5 is used as a slave (CPUs7-300 is an intelligent slave). What do you think? It is becoming more and more clear to me every post I make!
	If I could help you, you can use the RATE button. Thank you. Prospact Netherlands...your PCS7 and PCS neo Expert Topic: PCS7 Complete Overview
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12/10/2009 1:15 PM	Rate (0)
J_Bell Posts: 5822 Rating: (412)	Hello, you are right... but as said, you are in front of the PLC’s and you can take a look into the system... we can not. Did you check if the CP is a active node or a passive one? If so... is there maybe another FDL Connection configured? Did you check if the S7-400 does not use PUT / GET functions on a S7-Connection to read or write data from the PLC’s? You may check for it. Best regards J_Bell
J_Bell Posts: 5822 Rating: (412)
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12/14/2009 8:10 PM	Rate (0)
Oreca Platinum Member Joined: 3/14/2008 Last visit: 1/17/2025 Posts: 2161 Rating: (973)	Hello J_Bell, I think I got it: IM467 = Profibus master(2) = used for Danfoss drives CPU416 DP interface = Profibus master (1) = used for remote I/O which includes ET200M and 5 plc's. Two PLC's are 315-2DP which have a own DP master and the logic (send/recieve) is done automatically. and three PLC's (2x315, 1x314) have a CP342-5 module which acts like a profibus master but then is used as a slave. Send and recieve function blocks should be added in the S7-400. CP443-5basic = Profibus for connection to PC station -> used for SCADA in PCS7. MPI interface = used for connection with all PLC's. In 1999 it was not possible to use Profibus for connecting to PLC's so that you can read data from one place. That is the reason why there is a CP443-5 and MPI interface. The PLC's without DP integrated function as slave.. no S7 connection because eachPLC has it;'s own program and important signals are sent and recieved by the S7-400.
	If I could help you, you can use the RATE button. Thank you. Prospact Netherlands...your PCS7 and PCS neo Expert Topic: PCS7 Complete Overview
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