Difference between revisions of "Controlling Belimo Valves"
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[[File:PIC EU SR24A-MOD 4C-product.jpg|right]] | [[File:PIC EU SR24A-MOD 4C-product.jpg|right]] | ||
Belimo valves are one of the most recognised and widely used makes of valve in the HVAC industry. | Belimo valves are one of the most recognised and widely used makes of valve in the HVAC industry. | ||
The libraries on this page provide the tools to control and monitor valves using the MQTT open controls protocol and Node-RED. | |||
* [https://www.belimo.com/ch/en_GB/ Belimo Website] | * [https://www.belimo.com/ch/en_GB/ Belimo Website] | ||
== SR24A-MOD == | == SR24A-MOD == | ||
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* [https://www.belimo.com/ch/shop/en_GB/Actuators/Valve-Actuators/SR24A-MOD/p?code=SR24A-MOD Product page and instructions] | * [https://www.belimo.com/ch/shop/en_GB/Actuators/Valve-Actuators/SR24A-MOD/p?code=SR24A-MOD Product page and instructions] | ||
* [https://www.belimo.com/mam/europe/technical-documentation/system_integration/belimo_Modbus-Register_AirWater_V3_04_en-gb.pdf Belimo Modbus information] | * [https://www.belimo.com/mam/europe/technical-documentation/system_integration/belimo_Modbus-Register_AirWater_V3_04_en-gb.pdf Belimo Modbus information] | ||
== Modbus Registers == | |||
=== Summary === | |||
[[File:Belimo modbus1.png|634x634px]] | |||
Note that the register number is one more than address. | |||
=== Example Read Command === | |||
As an example, to read the Setpoint requires sending a FC3 read command (03) to the device (01 default) calling for register 1 (00 00), requesting a single value (01). | |||
In modbus the following characters would be sent to the valve over RS485: | |||
03 01 00 00 01 | |||
Revision as of 12:29, 27 May 2022
Belimo valves are one of the most recognised and widely used makes of valve in the HVAC industry.
The libraries on this page provide the tools to control and monitor valves using the MQTT open controls protocol and Node-RED.
SR24A-MOD
Modbus Registers
Summary
Note that the register number is one more than address.
Example Read Command
As an example, to read the Setpoint requires sending a FC3 read command (03) to the device (01 default) calling for register 1 (00 00), requesting a single value (01).
In modbus the following characters would be sent to the valve over RS485:
03 01 00 00 01