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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Modbus Bacnet converter
Last message by
Mgamboa
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Multiple modbus slaves on one master
Last message by
sd_dracula
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142
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Modbus to Android/iPhone/WiFi
Last message by
iotize
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Modbus C or assembler source code for microcontroller
Last message by
erivaldo
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Modbus RTU and TCP
Last message by
jschulze
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First venture into MODBUS, how to send a password?
Last message by
jschulze
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24
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Modbus RTU 2-wire Master with 4-wire Slaves
Last message by
David_2
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3K
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Wyara
ABB Inverter(slave) + MAX485 + Arduino(master) : 0xE0 (ModbusMaster invalid response slave ID exception)
Last message by
jschulze
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54
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2K
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Modbus RTU Address changing through RS-485 communication.
Last message by
Ajeer
7
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393
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Allen-Bradley-to-ECM by COSASCO Modbus Communication via RS485
Last message by
ControlsGuy25
5
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110
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Connecting to Deep Sea 7320 Using Modbus
Last message by
automator
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4K
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Two Modbus Slave with same Station Number
Last message by
PBR
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2K
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Modbus registers
Last message by
David_2
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852
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Denso Robot Modbus Implementation
Last message by
DMRobers
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948
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Sunspec standard through basic modbus communication
Last message by
ControlsGuy25
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132
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Response time requirement for Modbus RTU Master
Last message by
Mkekkonen
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373
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Read 2 devices with the Same Address
Last message by
David_2
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198
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Gree VRF Modbus
Last message by
ControlsGuy25
8
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225
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Bently Nevada 3300 Modbus Communications
Last message by
ControlsGuy25
4
Replies
279
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Wonderware to Daniel 2500 FC Modbus Comm issue.
Last message by
QuasWexExort
4
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248
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