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Trasfer data from a S7-300 to a S7-200 via Ethernet

Created by: etronmac at: 1/30/2008 11:45 PM (6 Replies)

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1/30/2008 11:45 PM	Rate (0)
etronmac Posts: 7 Rating: (1)	frapuano Hi I need to trasfer some data ( the content of some tags ) from an S7-300 to an S7-200 that are linked using an MPI connection. Have read about the X_PUT approach ..but I am a little bit new to the usage of STEP 7 and would like to know at first if the software that have used to program the till now the S7-200 can be used on the S7-300 to address this issue . If not , as I imagine wich version of STEP 7 need to use. Moreover would like to know if there are examples of such a type of data transfer that can use as a starting point for further development because on the technical Support site there are few info's about this problem , and the few examples reported are not clear.( better to say not completely clear ) Thanks a lot for any help Ok, I have a similar situation except I am using an S7 connection via IE. My 312 needs to read and write directly to the 224. I use the GET and PUT functions. I set up the 312 according to the following example: Sample program: S7 communication with the blocks FB14 ("GET") and FB15 ("PUT") with S7-300 I am using a 343-1 and a 243-1. I can get the 224 to read and write to the 312 when using a 343-1-Lean, but I need to go from the 312 to the 224 so I got a 343-1. Please help and Thank you.
etronmac Posts: 7 Rating: (1)	Last edited by: CS Moderator at: 31.01.2008 11:09 new subject after splitting refered post inserted
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1/31/2008 12:29 AM	Rate (0)
Floyd Posts: 130 Rating: (1)	etronmac: what's your protocol between the 2xx and 3xx?
Floyd Posts: 130 Rating: (1)
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1/31/2008 2:23 AM	Rate (0)
etronmac Posts: 7 Rating: (1)	Going from the 312 to the 224 is S7 over Ethernet. I have none set up for the 224. I am trying to do what the 224 does with the 343-1-Lean, except the other way around. The example previously mentioned shows the setup from the 300 with an S7 connection to an unspecified partner. Then you configure the partners IP address and TSAP. Is there more to the setup? Do I need to use a different read and write function? They both connect through an Ethernet card. The 312 via 343-1 and the 224 via 243-1 Thank you.
etronmac Posts: 7 Rating: (1)	Last edited by: etronmac at: 31.01.2008 02:36
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1/31/2008 10:48 AM	Rate (0)
J_Bell Posts: 5822 Rating: (412)	Hello, if you want to do GET / PUT Functions on the S7-300 you have to use the FB’s from the SIMATIC NET Library. They are made for the use with the CP 343-1. For the Settings you do not have to do more on S7-300 side than on any other unspecified Partner. Best regards J_Bell
J_Bell Posts: 5822 Rating: (412)
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1/31/2008 3:57 PM	Rate (0)
etronmac Posts: 7 Rating: (1)	I am using the FBs from the SIMATIC NET library and it still does not work. Could it be the TSAP for the 224? When I go through the ethernet wizard on the 224, it shows a TSAP of 10.00. When I configure the S7 connection in the 312, the default for the resources comes up with 03. I change it to 10 so that I get a TSAP of 10.00. Is there a different TSAP setting for the 224 when configuring the unspecified partner in the 312? For instance: in order for it to work from the 224 to the 312, I needed to set the remote TSAP in the 224 settings to 03.02 when using the 343-1-Lean, but when I configure the S7 connection in the 312 with the 343-1, the TSAP automatically configures the local TSAP as 10.00. TSAPs 224(local) to 312(remote via 343-1-Lean) 312(Local via 343-1)to 224(remote) 10.00 03.0210.00 10.00 Notice how the 312 TSAP changes between the configuration of each CPU. Does the 224's TSAP change as well? The only options I can change in the 312 S7 settings is the rack, slot and resource settings. The example program uses 2 S7 300s and in the connection properties, it has the connection ID of the second CPU as the partner ID. Both CPUs are set up with an S7 connection. I also set up a connection on the 224 using the wizard, but I do not have a partner ID to use for the 312 settings. It is to my understanding that with the S7 connection, I only need to setup one CPU and not both. Am I understanding correctly, or do i need to have both CPUs configured. Lost and confused. Thanks for all the help.
etronmac Posts: 7 Rating: (1)
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2/1/2008 1:58 PM	Rate (0)
J_Bell Posts: 5822 Rating: (412)	Hello, to tell you the truth... I havelittle Problem. On the one hand I can only find samples with both configurations on both sides but I still think that only one side should have to be configured... but anyway. If you have to configure a Connection form the S7-300 to the S7-200 I can not imagine that you have a local TSAP on the S7-300 of 10.00. You usually have a TSAP on the S7-300 that has a second byte on the TSAP that is depending on the position of the CP used in the Rack. If the CP is in Slot 4 you have at leased the TSAP 10.04, but never 10.00. The local TSAP of the S7-Connection in the S7-300 can not be changed. So I think you need the configuration of the S7-300 first, the Connection# of the S7-200 can be selected quite easily. So if you have the Local TSAP in the S7-300 you can configure the S7-200... not vise versa. Can you tell us which local TSAP the S7-300 has? Another idea would be to try everything without the Configuration on the S7-200. Maybe a try of the Remote TSAP 03.02 or 01.00 on the S7-300 could successfully access the S7-200, maybe. Best regards J_Bell
J_Bell Posts: 5822 Rating: (412)
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2/2/2008 7:05 PM	Rate (0)
etronmac Posts: 7 Rating: (1)	OK, Thanks for all the help. I have the solution. For my setup with an S7 312 CPU, you only need to setup the S7 connection on the 312 side. I am using an S7 312 via 343-1 and an S7 224 via 243-1. The TSAP for the 224 needs to be retrieved through the Ethernet Wizard in the STEP 7-MicroWIN program. I do not know how to get the TSAP if you are using another program. However, the TSAP is typically 10.00 for a basic setup. The TSAP for the 312 is preset and cannot be changed. However, if you want to go from a 312 to a 312, then you need to specify the 312 as a partner, instead of unspecified. The TSAP configuration is setup automatically for both ends. Again, you only need to setup the CPU that you are going to read and write with. If you want to setup an S7 connection from the 224 to the 312 via a 343-1-Lean, then you need to enter a TSAP of 03.02 for the partner. Even though the 312 will show its TSAP as 10.04 when configuring the 312 S7 connection. I do not know why the TSAPs do not match, but it will not work if you do not use 03,02 in the 224 S7 connection. I do not know about other CPUs, but this is how it has to be done for my setup. Another imprtant peice of information is that the REQ bit for the PUT and GET FBs need to cycle. If it remains high, you will not get an ERROR or a STATUS word. It will give the false illusion that it is working, but no data will be sent or retrieved. Trust me, I learned that lesson the hard way. Make sure you cycle the REQ bit for the functions. Also, when pointing to the V memory in the 224, you have to use P#DB1.BDX y.y BYTE z (y.y is the starting bit, z is the number of bytes to send) when using the PUT and GET functions in the 312. The 312 recognizes the 224 V memory as DB1. When I get some time, I will try to put together some setup instructions with pictures and post it here. Attachment 312 to 224 TSAP.pdf (617 Downloads)
etronmac Posts: 7 Rating: (1)	Last edited by: etronmac at: 28.02.2008 20:07 Last edited by: etronmac at: 28.02.2008 19:01 Last edited by: etronmac at: 28.02.2008 18:14 Correction: When establishing an S7 connection from the 312 to the 224, the 224 needs to be configured as a server with the Ethernet wizard in STEP 7-MicroWIN. Also, when setting up the 224, the remote TSAP to the 312 will be same as what the 312 sets it to when creating the connection in the 312.
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