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User Documentation
Starting with firmware version 1.3.X, the control, parameterization and some
Modbus addresses of the controller via Modbus TCP/IP have changed.
Therefore, check during commissioning which firmware your controller has
(see chapter "Checking the current firmware of the controller") and, if neces-
sary, perform a firmware update first. If you already control a controller with a
version below 1.3.X via Modbus TCP/IP, you can activate the use of old
Modbus addresses in your controller (see chapter "Necessary settings on
the controller"). If you have activated the Modbus compatibility mode, you do
not have to make any changes to your current solution for control via Mod-
bus TCP/IP (see chapter "Outdated software versions and their peculiari-
ties"). Updating the firmware to the latest version is recommended.
The decision whether to use the decimal or modicon scheme depends on the
software used and the configuration of the BMS. Please contact the manu-
facturer of your BMS for further information on the correct scheme.
2.1 Determining relevant Modbus TCP/IP data points
The data points provided by the controller or specified in the data point list vary de-
pending on the hardware modules installed and their configuration. Since the con-
troller provides all data points in the list, not all data points are relevant for you.
If, for example, you have not connected a boiler to the controller and want to read
out the corresponding data points of the boiler, you will only receive invalid values
(e.g. flow temperature of boiler = 0 °C). When writing data points that are not availa-
ble in the control system, you can set the values, but they have no influence on the
behavior of the controller.
The data point list is structured according to components. If, for example, you do not
use a boiler, you can ignore any data points that refer to the boiler component.
Therefore, before using the data point list, check which data points are suitable for
your application. Your Buderus representative can assist you in selecting the appro-
priate data points for your system.
If you use heating circuit modules, you must also pay attention to the slot. The slot
determines the number of the heating circuit. You should also make sure that you
have configured (e.g. activated) the components (heating circuits, boiler, etc.) in the
controller accordingly.
2.2 Checking the current firmware of the controller
You can check the firmware used in the controller as follows:
First switch to the information menu. Click on the "Version" menu item here. You will
find the current firmware in the "Operating system" parameter. If the displayed firm-
ware is smaller than 1.3.X or if you have activated the mode "Modbus compatibility
© All rights with Robert Bosch GmbH, also for the case of protected rights applications
EN_User_documentation_Instructions_for_controlling_the_Logamatic_5000_controller_series_via_Modbus_TCP_I
P_20210203.docx | 10.02.2021
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