4/20/2012 2:33 PM | |
Joined: 3/18/2008 Last visit: 12/8/2023 Posts: 1750 Rating:
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Dear All, Hereby i am attaching Modbus Slave Program for ready reference. In this reference project, CP341(RS485) is Modbus Slave and Yokogawa DCS is Modbus Master(RS232). you can find Sample Program with Mapping Details in Excel FIle and Cable Configuration as well. Hope this will help to understand Modbus Slave Concept eailsly ans especially to those who are Configuring Modbus Slave for the first time. AttachmentModbus Slave Program.zip (5377 Downloads) |
VANDE MATARAM..... |
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10/17/2012 8:42 AM | |
Joined: 3/18/2008 Last visit: 12/8/2023 Posts: 1750 Rating:
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Dear Victorious, In my Sample Program, I have created Function & Data block apart from Blocked Library Blocks. You are not required to understand logic inside Blocked/Protected Library Blocks especially when you are doing third party communication. For understanding the mapping Concept, you need to have basic understanding of Modbus Function Codes. Please go through in details with below all important document first of all. After that try to co-relate Excel File Modbus address starting with 40001 with FC & DB in above example. Hope this helps. Modbus General Description |
VANDE MATARAM..... |
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This contribution was helpful to
2 thankful Users |
7/3/2013 3:06 PM | |
Joined: 1/5/2011 Last visit: 6/15/2024 Posts: 815 Rating:
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Hi Amit_86, thanks for your fast reply. You were right, I hadn't installed the required software properly. I now installed the required software to see the parameter settings. The only problem is that I can't check the parameters since I haven't got my slave dongle yet, therefor the configurable loadable driver isn't installed on my PC. I'm pretty sure once that's done I will be able to see all parameters....Sothanks for helping!!! By the way, if anyone has problems with the installation of the software on a 64bit system(for example: error message "system has already been modified") make sure you get the correct version (64bit compatible). Here is the link: http://support.automation.siemens.com/WW/view/en/27013524. |
Keep it simple and on-topic. |
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7/3/2013 5:27 PM | |
Joined: 3/18/2008 Last visit: 12/8/2023 Posts: 1750 Rating:
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Hello, you can download ptp parameter configuration software from here. Download CD "CP340, CP341, CP440, CP441" Loadable driver for Modbus RTU Loadable Driver Modbus Slave (RTU) |
VANDE MATARAM..... |
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