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9.4.3 Activation of the radio interface
The radio interface leaves the factory deactivated. It can be activated as follows:
a. Without using additional software the radio function can be activated by pressing the push-button for over
3 seconds while at the display item ‘M-Bus address’, second level, item 8 (see section 7 Display, Level
2/Technician’s Loop). The standard factory-settings will be activated.
b. The radio function can also be activated using the software ’Device Monitor’. This software can be ordered
separately as an option. The exact procedure for activating the radio function using this software is
described in the accompanying handbook.
After successful activation of the radio function a triangle will appear permanently in the lower left corner of the
display.
If using the compact mode, for one hour after activation the meter transmits in installation mode. This means that
format telegrams and compact telegrams are sent alternately.
During installation mode at least one meter of the version being installed (forward or return flow, heat or
heat/cooling, pulse inputs, display units) must be read out with the Engelmann Read-out Software. The format of
the telegram will be stored locally in the PC in an .xml file.
After completion of the installation mode only compact telegrams will be transmitted.
9.5 Two additional pulse inputs (optional; only in conjunction with M-Bus or radio)
With this option, additional instruments with pulse outputs can be read out via M-Bus or radio.
General information about pulse inputs
It is important to note that the acknowledged state of the art technology rules and the relevant legal restraints
(international and local; see 9.5.1 “Relevant norms, standards and literature on the pulse inputs”) are to be
observed.
The installation has to be performed by authorized, skilled persons.
If the regulations and the information in the installation and operating instruction manuals are not strictly followed,
or if the installation is shown to be faulty, any resulting expenses will be charged to the company responsible for
the installation.
9.5.1 Relevant norms, standards and literature on the pulse inputs
Low-voltage electrical installations - Part 4-41: Protection for safety - Protection
against electric shock
Low-voltage electrical installations - Part 4-44: Protection for safety - Protection
against voltage disturbances and electromagnetic disturbances
Electrical installations of buildings - Part 5-51: Selection and erection of
electrical equipment - Common rules
Low-voltage electrical installations - Part 5-54: Selection and erection of
electrical equipment - Earthing arrangements and protective conductors
Application of equipotential bonding and earthing in buildings with information
technology equipment
Heat Meters - Part 2: Constructional requirements
9.5.2 Technical data pulse inputs
CMOS; IB according to EN 1434-2:2007
Internal pull-up resistance
Length of connecting cable
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