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| 4/13/2010 8:48 AM | |
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Posts: 12 Rating:
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Hello Users! I´m beginner in Siemens and I have a simple question. Which is the difference between DP_SEND and DPWR_DAT blocks ?When each one is used ? Thanks |
| 4/13/2010 12:18 PM | |
Joined: 8/25/2005 Last visit: 5/25/2023 Posts: 1161 Rating:
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Hello Licht, The DP_Send is only used in combination with a CP342-5. The DPWR_DAT is necessary to transfer consistand data to a module with 3 or more as 5 Byte data. Have a look at the following manuals for details: S7-CPs for PROFIBUS Configuring and Commissioning Automation System S7-400 CPU Specifications Best regards Sabine |
| 4/14/2010 3:39 AM | |
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Posts: 12 Rating:
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Hello Sabine, Thank you for the links. But I still have a question: Can I use DPWR_DAT instead DP_SEND block whether I amusing a CP342-5 ? Thanks ! |
Last edited by: Licht at: 4/14/2010 3:40 AM |
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| 4/14/2010 6:15 AM | |
Joined: 10/7/2005 Last visit: 6/5/2023 Posts: 2966 Rating:
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Hello Licht No you can NOT, you MUST use DP_SEND for a CP342-5 and below are a couple of FAQ's which have moreuseful info on this subject: What are the differences between an integrated DP interface of my CPU (e.g. CPU 315-2 DP) and the DP interface of the CP 342-5? What should you watch out for when configuring a CP342-5 as DP master? I hope this helps |
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