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Old July 2nd, 2008, 12:22 AM   #1
dmbartender
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AB CLX controller communicating with S7

Hello all,

I would like to make a 1756-L62 CLX processor communicate with an S7 CPU 317-DP (coupled to a CP-343 ethernet card). The data to communicate will be a sructure having about 14000 bytes. The data is to be sent from the CLX to S7.

First of all, has anyone connected a CLX and S7 processor together?

What is the largest packet size CLX can send using 'produced' ?

Any tips would be great.
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Old July 2nd, 2008, 01:40 AM   #2
dmbartender
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This post is a throwback to thread: http://www.plctalk.net/qanda/showthr...190#post277190I've also read through some older threads concerning communication between S7 and CLX, however the data I need to send is of much larger magnitude.

The SST card from woodhead can write a maximum of 244 bytes to a slave, if I've understood that correctly and the slave would be the S7 controller.

I'd need to send 14000 bytes.

Is there a solution for sending such large amounts of data? OPC server, or Profinet Proxy?

The time isn't so critical.
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Old March 24th, 2009, 05:35 PM   #3
cbattles
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Did you ever find a solution? I have a similar task of communicating from a Siemens S7 to a A-B SLC-5/05.
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Old March 25th, 2009, 12:12 AM   #4
dmbartender
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well, first of all, the amount of data to be sent was reduced and sent over separate UDP connections. I ended up using a CP-343 on the S7 side, and EWEB module on the CLX side. On the S7 side it's actually pretty easy using the AG_Send and AG_Recv blocks. It's trickier on the CLX side though, requiring a number of different message commands.
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Old March 25th, 2009, 05:24 AM   #5
ss4884
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Hi dmbartender,
Using CLX u can communicated wit any device via Ethernet using TCP/IP Sockets..
Your Hardware needs a 1756-EWEB module and u can use MSG instruction to transfer Data to any device over Ethernet,
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Old March 25th, 2009, 05:48 AM   #6
JesperMP
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How did you do it ?

Quote:
Originally Posted by dmbartender View Post
well, first of all, the amount of data to be sent was reduced and sent over separate UDP connections. I ended up using a CP-343 on the S7 side, and EWEB module on the CLX side. On the S7 side it's actually pretty easy using the AG_Send and AG_Recv blocks. It's trickier on the CLX side though, requiring a number of different message commands.
How about a short howto for the steps required to achieve this ?
Post it in the downloads section, and gain eternal fame and praise.
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Old March 25th, 2009, 05:54 AM   #7
ss4884
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Hi JesperMP,
i can get u the details from CLX side but i not sure how far it can work with siemens..

Last edited by ss4884; March 25th, 2009 at 05:56 AM.
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Old March 25th, 2009, 06:05 AM   #8
JesperMP
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I dont have any need right here and now.

But the question has been asked before, so it would be really nice if someone did this once and for all.
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