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Data Exchange between 2x IM151-8 PN/DP CPU (6ES7 151-8AB00-0AB0)

Created by: tomearp at: 1/26/2009 8:10 PM (8 Replies)

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1/26/2009 8:10 PM	Rate (0)
tomearp Posts: 51 Rating: (3)	hello. i'm a complete newbie with profinet and i need to exchange data between 2 IM151-8 CPUs. is it similar to profibus comms where i can get it to send/receive x number of bytes or words over and over?(like in HWConfig, double click the DP/MPI interface, configuration tab....see picture). any help much appreciated as i'm thoroughly confused! Attachment moo.gif (297 Downloads)
tomearp Posts: 51 Rating: (3)
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1/26/2009 9:42 PM	Rate (0)
INS Gold Member Joined: 4/6/2006 Last visit: 2/5/2024 Posts: 604 Rating: (56)	Hi Tomearp, This is not possible with the IM151-8 CPU. This because this CPU is a ProfiNet IO Controller only. There is no device functionality. But there are still some great solutions. 1. S7 Connection between the 2 Devices. Programmed in NetPro. 2. Open TCP Connection. Programmed in your user programm (T_CONN, T_DISCON, T_SEND, T_RECV). 3. PN/PN Coupler. Programmed in the HW-Configuration, Real Time communication is possible.
	Best regards, INS
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1/27/2009 10:31 AM	Rate (0)
tomearp Posts: 51 Rating: (3)	are there any PN CPUs that are capable of data exchange in the same way as DP? i'm obviously missing the point of profinet. i want to use it to make use of the existing network infrastructure on a site. but by the sounds of it i'm going to end up putting extra hardware in tolink the CPUs together, ori move away from profinet, change to DP devices, and end up running DP cables between the various controller locations.
tomearp Posts: 51 Rating: (3)
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1/27/2009 10:46 AM	Rate (0)
INS Gold Member Joined: 4/6/2006 Last visit: 2/5/2024 Posts: 604 Rating: (56)	Hi, You could use the CP343-1 Lean with a regular CPU to add the PN IO Device functionality. Do you really need the Realtime data transmission? Otherwise I would advice the first 2 options. Since the module is very new I think the features of te device wil be expanded in the future. So far there is no CPU from Siemens with Device functionality integrated.
	Best regards, INS
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1/27/2009 11:46 AM	Rate (0)
tomearp Posts: 51 Rating: (3)	it doesn't need to be realtime, a delay of several seconds would be acceptable if i do the s7 connection option will i be able to transfer data between them?how do i go about doing it?
tomearp Posts: 51 Rating: (3)
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1/27/2009 12:17 PM	Rate (1)
INS Gold Member Joined: 4/6/2006 Last visit: 2/5/2024 Posts: 604 Rating: (56)	Hi, Then the S7 Connection would be better then PN IO. Just you can communicate across the boundaries from a network (different IP Range). Create your stations, if possible in the same project because you can use specified connections. When the HW-Config is ready you jump to NetPro and configure from one of the device the S7 Connection o the partner. If this is done you create the blcoks you need to SEND and RECEIVE the data. For example PU/GET or SEND/RECEIVE: It's not very difficult to program. You could use the examples for S7-300 Devices on the Support Site.
	Best regards, INS
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This contribution was helpful to 1 thankful Users tomearp

1/27/2009 1:21 PM	Rate (0)
tomearp Posts: 51 Rating: (3)	configured the connection in net pro and got one reading data from the other using sfb14 thanks very much for your help!
tomearp Posts: 51 Rating: (3)
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1/27/2009 1:47 PM	Rate (0)
INS Gold Member Joined: 4/6/2006 Last visit: 2/5/2024 Posts: 604 Rating: (56)	Tomearp, Thanks for your feeback. Good luck with your project.
	Best regards, INS
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2/2/2009 4:13 PM	Rate (1)
Plc-Guru Posts: 12 Rating: (1)	Remark: You can use a opc server also on a Pc too exhange data in between cpu´s.
Plc-Guru Posts: 12 Rating: (1)
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