UVR42

Heating - DL-Bus (Technische Alternative) COLLECTION C

Introduction

The UVR42 unit is a single-circuit universal control system. The UVR42 unit is designed for simple solar installations and heating systems (storage charging, domestic hot water preparation)

  • The DL bus runs at 24 volts.

  • The data frame consist of 10 bytes (excluding sync).

  • The data are transmitted @ 50Hz, therefore the transmission of one data set takes about 2.32 seconds.

../_images/P092_UVR42.jpg

Wiring

../_images/P092_24V_Wiring.png

Protocol

../_images/P092_UVR42_Protocol.png

Setup

Note

A new device task must be created for each value to be read from the DL bus!

../_images/P092_Setup.png

Task settings

  • Device: Heating - DL-Bus (Technische Alternative)

  • Name: Name of the task (example name ValueN, where N is a number).

  • Enable: Should the task be enabled or not

Sensor

  • 1st GPIO: DL bus input e.g. GPIO 14 (D5)

  • DL-Bus Type: UVR42

Note

The settings for 1st GPIO and DL-Bus Type must be the same for all used DL bus tasks!

Inputs

Note

The description of the Frame data and the related Frame bytes can be found in the section Protocol!

Frame data

Frame bytes

Value

Index

Decimals

Temp1 … Temp4

2 … 9

Sensor

1 - 4

1

Output byte

10

Digital Output

1 - 2

0

Data acquisition

  • Send to controller 1..3: Check which controller (if any) you want to publish to. All or no controller can be used.

  • Interval: How often should the task publish its value (20..60 seconds is normal).

Note

Interval not less than 20 seconds! The reading of the DL bus happens twice per interval.