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Kamstrup A/S • 5512853_C1_GB_01.2017
M-Bus Master MultiPort 250D
7.2.1
Power
Green light emitting diode which is lit when the master is connected to supply power of 100-240 V, 50-60 Hz.
7.2.2
Request
Orange light emitting diode which flashes briefly when a command or a request from the master is transmitted to the
M-Bus network.
7.2.3
Data
Orange light emitting diode which flashes when an M-Bus slave sends data to the master. The duration depends on the
amount of data being sent.
7.2.4
Overload
Red light emitting diode which flashes when the load on the M-Bus network is between 375 and 500 mA.
It is permanently lit when the load on the M-Bus network exceeds 500 mA. 375 mA corresponds to 250 UL (M-Bus Unit
Loads). At 500 mA, M-Bus Master MultiPort 250D disconnects due to overload or short circuit condition.
7.3 Display
The resolution of the backlit display is 128x64 pixels. The master is operated by means of the display and the six keys.
The four corners of the display are used for four different types of information.
Title
Displays the name of the menu, e.g. scan, or indicates whether the master is configured as master or as repeater.