12/27/2018 4:19 PM | |
Joined: 9/27/2006 Last visit: 4/25/2024 Posts: 12257 Rating: (2665) |
Hello mertman; Since we cannot see the configuration of the DP/DP coupler (in the S7 and in the Emerson PLC), it is difficult to estimate what you are trying to read. Please start by attachiung scrrenshots of those configurations. As I said before, the DP/DP coupler uses I/O addressing to exchange data between DP masters, so using DPWR_DAT and DPRD_DAT functions in your program seems irrelevant. The S7 CPU would write values to its own ouput addresses (configured in the DP/DP coupler in step 7) to transfer data to the Emerson partner. And it would read its own input addresses (configured in the DP/DP coupler in Step 7) to read values that are written by the Emerson CPU. Each master only reads and writes to its own configured addresses, you cannot try to read and write to the other partner directly. Please try to explain what you are trying to do, based on your provided configuration screenshots, and have a look at this important information: DP/DP coupler manual : https://support.industry.siemens.com/cs/ww/en/view/1179382 What are the special features of input/output addressing with the DP/DP coupler? https://support.industry.siemens.com/cs/ww/en/view/22327981 Configuration of the I/O Data on DP/DP Coupler https://support.industry.siemens.com/cs/ww/en/view/19281019 Hope this helps, Daniel Chartier. |
This contribution was helpful to1 thankful Users |
12/28/2018 9:19 AM | |
Joined: 8/29/2018 Last visit: 4/25/2024 Posts: 14 Rating: (0) |
Hello, How can be diffirent can you explain it ? Mert. |
12/28/2018 9:48 AM | |
Joined: 8/29/2018 Last visit: 4/25/2024 Posts: 14 Rating: (0) |
If procces is correct, I am going to match emerson side no problem |
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