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CPU417 with only one CP443-1 for TCP/IP Modbus with 15 partners

3/22/2011 4:34 PM	Rate (0)
gihwan Posts: 1 Rating: (0)	Hi, I have CPU417 with only one CP443-1 for TCP/IP Modbus with 15 partners. 1. I'd like to know how do I change the function code? I need read data from partners several registers and coils, which means I need change the function code. If you have sample project or FB for change partner, function cord, staring address and number of registers, please let me know. Many thanks in advance. Gihwan
gihwan Posts: 1 Rating: (0)
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3/23/2011 10:11 AM	Rate (0)
Sakura Silver Member Joined: 9/22/2010 Last visit: 2/10/2025 Posts: 225 Rating: (28)	The CP does not have an implementation for Modbus communication, that is why the AG-functions have to be used for the Modbus communication. So you either do that implementation on your own or you can use the 'OpenMODBUS/TCP for NCM CP' blocks. You can find information about it at www.siemens.com/s7modbus In the tab 'Downloads' you can find a demoversion of the Modbus blocks, which also contains example projects. Regards, Sakura

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4/29/2011 11:41 AM	Rate (0)
Niranjan Prasad Posts: 691 Rating: (37)	At last now we have some blocks for Modbus TCP/IP Communication
Niranjan Prasad Posts: 691 Rating: (37)
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