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Support for Reading Modbus Slave and Controlling Output for PLC Logo

Created by: tran_hau at: 8/2/2024 4:54 AM (11 Replies)

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8/2/2024 4:54 AM	Rate (0)
tran_hau Joined: 8/2/2024 Last visit: 8/12/2024 Posts: 11 Rating: (0)	I am new to programming with the PLC Logo and I have a project as follows: My PLC Logo will read Modbus TCP/IP signals from a computer and will control its output according to the value returned by the Modbus. I am not sure how to proceed. Can anyone help me with this? Thank you all for your attention.

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8/2/2024 6:15 AM	Rate (0)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 11/13/2024 Posts: 34207 Rating: (4261)	You have to define more precisely what you want to do. Give more informations.

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8/2/2024 6:24 AM	Rate (0)
tran_hau Joined: 8/2/2024 Last visit: 8/12/2024 Posts: 11 Rating: (0)	I will have a Modbus slave that sends a signal of 0 or 1 to the PLC Logo. The PLC will then control the output (which could be a light or motor) to turn it on or off.

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8/2/2024 6:28 AM	Rate (0)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 11/13/2024 Posts: 34207 Rating: (4261)	Which computer? A normal PC or a Laptop?

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8/2/2024 6:31 AM	Rate (0)
tran_hau Joined: 8/2/2024 Last visit: 8/12/2024 Posts: 11 Rating: (0)	I want it to work for both PC and laptop.

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8/2/2024 6:33 AM	Rate (0)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 11/13/2024 Posts: 34207 Rating: (4261)	And both can Modbus TCP/IP?

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8/2/2024 6:35 AM	Rate (0)
tran_hau Joined: 8/2/2024 Last visit: 8/12/2024 Posts: 11 Rating: (0)	Yes, both can support Modbus TCP/IP

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8/2/2024 6:37 AM	Rate (0)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 11/13/2024 Posts: 34207 Rating: (4261)	Sorry, then I can't help you. It's new to me that a PC or a Laptop can be a Modbus TCP/IP slave.

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8/2/2024 6:45 AM	Rate (0)
tran_hau Joined: 8/2/2024 Last visit: 8/12/2024 Posts: 11 Rating: (0)	I will use Modbus Poll to send data to the PLC. What I need to know is how the PLC program will be implemented to receive the data and control my output

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8/2/2024 6:47 AM	Rate (0)
ixo65 Grandmaster-Expert Joined: 12/18/2014 Last visit: 11/13/2024 Posts: 34207 Rating: (4261)	Why so complicated? Use the integrated web server of the LOGO!.

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