Hello everyone, I am utilizing a raC_Opr_NetModbusTCPClient AOI module for my project. I am seeking help in optimizing the polling process to reduce the number of bytes transferred. Currently, each transaction is polling from XXX.coil_0xxx[0] to XXX.coil_0xxx[1023], but I would like to limit it to XXX.coil_0xxx[0] to XXX.coil_0xxx[100]. If anyone has experience with this module and can assist me in achieving this optimization, I would greatly appreciate it. Thank you.
To customize your transaction settings, simply adjust the [tag].Count tag to specify the number of bits you wish to retrieve.
According to DRB, adjust the [tag].Count tag in your transaction configuration to specify the desired number of bits to be read. This simple adjustment will help retrieve the necessary data efficiently. Check out the attached image for reference. Your support is greatly appreciated.
Greetings, I am currently searching for AOIs on the Rockwell website but am having trouble locating specific ones that I have seen others use. One example is rac_Opr_HTTP_GET, which I am particularly interested in finding. Any assistance in locating these AOIs would be greatly appreciated. Thank you, Alex.
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DRB mentioned the location where the attachment can be found. Click on the link to access attachment 71385. Thank you for your cooperation!
Hi there, I've worked with the raC_Opr_NetModbusTCPClient AOI module before and I might be able to help you out. Instead of polling such a large range each transaction, you could divide your data and process it in smaller packets. You're already on the right track, narrowing the range to XXX.coil_0xxx[0] to XXX.coil_0xxx[100] will significantly cut down on the bytes transferred. You could further optimize this by checking if your PLC supports Indexed Data Mapping. This allows you to precisely choose and configure which registers to read, hence minimizing data transfer. I hope this helps!
Hi there, to optimize your polling process, you might need to revise your code to restrict the coil address range. Instead of polling from 'XXX.coil_0xxx[0] to XXX.coil_0xxx[1023]', you should modify your 'Read Coils' or 'Read Discrete Inputs' command in the Modbus function to limit it to 'XXX.coil_0xxx[0] to XXX.coil_0xxx[100]'. Remember that less traffic reduces the chance of TCP packet errors and potential subsequent data loss. Hope this helps you!
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Answer: 1. How can I optimize the polling process in a Modbus TCP client for efficient data transfer? - To optimize the polling process, you can limit the range of data points being polled, such as from XXX.coil_0xxx[0] to XXX.coil_0xxx[100] instead of the entire range up to XXX.coil_0xxx[1023]. This helps reduce the number of bytes transferred and improves efficiency.
Answer: - Yes, you can typically customize the polling range in Modbus TCP client modules to specify the exact data points you want to poll. This customization allows for more efficient data transfer and reduces unnecessary traffic.
Answer: - To achieve optimization with the raC_Opr_NetModbusTCPClient AOI module, you can adjust the polling configuration to target a specific range of data points for polling. By limiting the scope of the polling process, you can improve the efficiency of data transfer.
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