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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How to map floating point values in MODBUS?
Last message by
ModbusEngineer
11
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35K
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Modbus-TCP application scenario
Last message by
Vincent_Hu
0
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1K
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nikoloz
Homebrewed software to target NETCF 2.0 on ARMV4I device and relay output module
Last message by
nikoloz
0
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783
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questions
Last message by
David_2
1
Replies
596
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Distance between 2 Modbus RTU device
Last message by
apa
4
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1K
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mpernandes
Converter Modbus - Documentation how the protocol works
Last message by
mpernandes
2
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1K
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ABB REF 615 ERROR COMMUNICATION MODBUS
Last message by
David_2
1
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2K
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Peter Humaj
Two Modbus implementations with non-standard behaviour
Last message by
Peter Humaj
4
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1K
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Jhallelec
Ls plc rs485 to Teco A510 drive
Last message by
Jhallelec
0
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588
Views
Tecnico de servicio
modbus exception response from slave device
Last message by
Tecnico de servicio
5
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5K
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Gree VRF Modbus
Last message by
rootboy
10
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3K
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Modbus connection error
Last message by
jschulze
6
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2K
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jfenwick
Cheap Modbus TCP module similar to STRIDE Field I/O?
Last message by
Sumpi
6
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2K
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Testing a 32-Input module with Modbus Master Sim & Arduino, beginner advice needed
Last message by
jschulze
11
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2K
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ABB CI853 Modbus issue
Last message by
mohsen252
2
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1K
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Modbus RTU Address changing through RS-485 communication.
Last message by
David_2
9
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7K
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Rs485 modbus fx5u mitsubishi plc and leadshine drive
Last message by
David_2
3
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2K
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Emerson Dixell XR75CX Modbus Registers
Last message by
rawrico
2
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3K
Views
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GE Rx3i (Proficy ME 9.5): Protocol for reading floating points from power monitor using Modbus TCP
Last message by
David_2
1
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1K
Views
S
Increasing baud rate from 9600 to 19200 fixes issues...why?
Last message by
SomeNerd
6
Replies
4K
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