1/24/2025 8:51 AM | |
Joined: 1/1/2022 Last visit: 4/6/2025 Posts: 1 Rating:
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Hello I am trying to make communication between Modbus TCP PLC with IM151-7 V3.3 From ET200S. The CPU is 6ES7 151-7AA21-0AB0 And this is the hardware configuration The Profibus Address of the CPU is 3 I have used the ADF Web converter SW67579. the converter is Profibus DP master and Modbus TCP slave Its address is 1 and the baud rate for the converter and im151-7 is 187.5k Here are the used address for the CPU the problem is that when I installed the program there is BF blinking when i connect the profibus cable and connectors (I have changed them to brand new one) and you can see the diagnostics buffer attached The SF is always and when i want to go online with the CPU it doesnt go online and the PC adaptor damaged in the device manager, until I replug it and connect it directly to the PLC after removing the profibus connector Could you help me?? AttachmentDiagnose.txt (106 Downloads) |
1/25/2025 11:01 AM | |
Joined: 9/21/2012 Last visit: 9/10/2025 Posts: 4708 Rating:
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That CPU is based on the S7-300 and it doesn't have native Modbus support. You need a ET200S card for the modbus communication. Master-Slave Communication with Modbus RTU Protocol for S7-300 and ET 200S Systems |
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