Modbus

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A community for the Modbus communications protocol - data communication between devices over TCP/IP and over serial line – open and royalty-free since 1979. Visit Modbus.org to download the Modbus protocol specification and implementation guides.
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Modbus Organization Replaces Master-Slave with Client-Server
Last message by
mercator
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Communicate with Modbus RTU to EATON IQ100 power meter through Internet
Last message by
jschulze
3
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263
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Writing to a Holding Register Using Modbus Poll Master Software.
Last message by
David_2
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1K
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Modbus TCP/IP on Ethernet Cable Maximum Distance
Last message by
David_2
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310
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Daikin Modbus Cards EKFCCMBCB7
Last message by
David_2
8
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423
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nikoloz
Homebrewed software to communicate with measuring device via Modbus TCP
Last message by
sunnyygq
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4K
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MODBUS TCP/IP on WINCC
Last message by
fixxxer_ki
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3K
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Combining RS485 with Wifi TCP/IP. Buy converter or ???
Last message by
patrickduis
5
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336
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Question : How I Send AO for a Setpoint Temperature With Modbus RTU
Last message by
Leonardojoseph
2
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338
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Vlike888
Difference in value on slave and master in Modbus over RS485
Last message by
Vlike888
2
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413
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Checksum error in one program but not another
Last message by
jschulze
3
Replies
305
Views
Advaith
Establishing Modbus TCP communication
Last message by
David_2
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2K
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Checksum error and Insufficient bytes recieved
Last message by
Vindsan
11
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446
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CS31 to Rs485
Last message by
Alaateba
0
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281
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Modbus Function Code 5
Last message by
lsmadeux
2
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671
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Trying to integrate A/C system with home assistant
Last message by
daveymit
2
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444
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How to: slave addressing
Last message by
jschulze
9
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499
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Mylara-Effone
Invalid range error while modbus writing register value.
Last message by
jschulze
3
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409
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Modbus communication between a Delta PLC and a C# program
Last message by
mike82
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660
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Modbus TCP/IP to SFTP Convertor
Last message by
patrickduis
2
Replies
754
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Conversion from IEC 60870-5-103 To Modbus
Last message by
David_2
2
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1K
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