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| 4/8/2009 6:57 AM | |
Joined: 3/21/2006 Last visit: 1/14/2025 Posts: 10239 Rating:
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Hello coopdegrace, You can start with What should you watch out for when configuring a CP342-5 as DP master? Hope this will helps. Best regards |
| 4/8/2009 7:44 AM | |
Joined: 9/27/2006 Last visit: 1/17/2025 Posts: 12330 Rating:
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Hello coopdegrace; As you can see from Umencho's suggested link, FC1 and FC2 (DP_SEND/RECV) are used when the CP 342-5 is trying to establish master-slave cyclic communications (with DP-slaves in the field). You could implement exchanges that way between the PLCs, setting one of the CP 342-5s as a DP-slave. But the easiest way is to setup the CPs for master-master acyclic communications that allow the CPUs to exchange data directly over Profibus-FDL, using AG_SEND and AG_RECV blocks.. The following FAQ will give you information on the FDL protocol and its advantages; you will also find at the bottom of the thread a link to a sample program that can help you devise your own application. http://support.automation.siemens.com/WW/view/en/26098555 Hope this helps, Daniel Chartier |
| 4/8/2009 2:50 PM | |
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Posts: 5822 Rating:
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Hello, may I ask, do you use the CP only once in one CPU or on both CPUs? FDL or S7-Communication would only work if you have the CP on both CPUs. Best regards J_Bell |
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