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gprs connection between two simatic cpu

Created by: Import-User-1 at: 8/31/2005 1:34 PM (4 Replies)

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8/31/2005 1:34 PM	Rate (0)
Import-User-1 Posts: 3609 Rating: (29)	Hello We are looking for a possibility to connect simatic s7 cpus with a gprs connection. At the moment, gprs connections by mobile or pda are very easy to install and the connection fees are very cheap. Is it possible to connect S7 cpus by gprs instead of slow and expensive GSM Modem Connections. Do i need a CP343/CP443 and a TCPIP Stack or is it possible to establish a connection via MPI (cheap way). We would like to transmit a few bytes every hour from about 20 stations to our S7-400 Central. Does anybody have experience to this topic? Thanks Daniel
Import-User-1 Posts: 3609 Rating: (29)	Last edited by: Import-User-1 at: 8/31/2005 1:34 PM
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8/31/2005 1:35 PM	Rate (0)
Import-User-2 Silver Member Joined: 8/10/2005 Last visit: 4/9/2024 Posts: 1486 Rating: (32)	Hello Daniel You can use a sinautconnection, for info go to http://www.siemens.com/sinaut Best regards, Andre van Gijsel

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8/31/2005 1:35 PM	Rate (0)
Import-User-1 Posts: 3609 Rating: (29)	Hello Andre Thank you for your fast answer. We are already using several SINAUT products. We have some stations connected by GSM, by SMS, by Radio , by Telephone or Fiber Optic. The Problem is that the traditional GSM or SMS Services are very expensive. Now the GSM Providers offer very special GPRS packets. For Example in Austria 7 MB per Month cost only 6 €, and you are always online. You only pay per MB and not per connection. So it would be the best to connect our Field Stations by GPRS and transfer every 60 minutes only some Bytes. But I cannot find any Components who provide GPRS connections for Automation. Only PDAs and Cell Phones provide GPRS support to get a connection to the Internet. But that is not what i want. I would like to get a serial or MPI connection between two S7-Cpus using the cheap GPRS connections. Have you got any Ideas? Thanks Daniel
Import-User-1 Posts: 3609 Rating: (29)
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8/31/2005 1:35 PM	Rate (0)
Import-User-2 Silver Member Joined: 8/10/2005 Last visit: 4/9/2024 Posts: 1486 Rating: (32)	Hello Daniel If I am not mistaken there are sinautmodules who can operate over GPRS. Then only if you have a change of signal than it wil transmit. For A PG connection it is likewise and the advantage of PG routing is functional over a tim. Than you can acces other stations over a tim. Contact the Sinaut people> I am certain that they have a solution. Ask for Mr van Schaick. Best regards, Andre van Gijsel >From: "simatic_s7 Listmanager" > >Reply-To: "SIMATIC S7" >To: (Recipients of 'simatic_s7' suppressed) >Subject: RE: gprs connection between two simatic cpu >Date: 27 Apr 2005 08:18:09 +0200 > >From: "daniel hois" > >Hello Andre > >Thank you for your fast answer. >We are already using several SINAUT products. >We have some stations connected by GSM, by SMS, by Radio >, by Telephone or Fiber Optic. > >The Problem is that the traditional GSM or SMS Services are >very expensive. >Now the GSM Providers offer very special GPRS packets. >For Example in Austria 7 MB per Month cost only 6 €, and you >are always online. You only pay per MB and not per connection. So it would >be the best to connect our Field Stations by GPRS and transfer every 60 >minutes only some Bytes. >But I cannot find any Components who provide GPRS connections for >Automation. >Only PDAs and Cell Phones provide GPRS support to get a connection to the >Internet. But that is not what i want. >I would like to get a serial or MPI connection between two S7-Cpus using >the cheap GPRS connections. > >Have you got any Ideas? > >Thanks >Daniel
	Last edited by: Import-User-2 at: 9/15/2005 3:38 PM
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2/27/2007 5:29 PM	Rate (0)
Laloesco Posts: 33 Rating: (5)	Hi Daniel, We have made a connection between 02 or more S7-300 PLC, using GPRS modems with an RS-232 port and Modbus RTU protocol. the modems make a direct link between the stations. The modem configuration was made by the provider, but they told me what the modems have a list of IP where to send the data received by serial port The only consideration we made was the timeout. I hope this could help you. Best Regards
Laloesco Posts: 33 Rating: (5)
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