Digital Master

Signal processor driven M-Bus Master / Level- Converter for 120 or 250 slaves

• modular design:

• as Master with plug-in CPU-Board and integrated Master-Software

• as Repeater for bus system extension (more than 250 slaves, more cable length)

• as Level-Converter for RS232, RS485 or 20mA Current-Loop

• Baudrates: 300 to 9600 Baud

• Version for 38400 Baud with limited specifications

• Bit-Recovery (recovery of bit times)

• Overcurrent and short-circuit protection on the M-Bus

• external voltage and lightning protection on the M-Bus

• Echo cancellation and collision detection with break signalling

• Displays for power, data transmission, max. bus current and short-circuit

• 2 serial lines (modem and service)

Function of the M-Bus Central Unit

The M-Bus Central Unit scans the data from up to 250 meters in selectable intervals. All meters with M-Bus protocol according to EN1434-3 are automatically detected and read. This means that the user is saved the laborious task of configuring the measuring points in the software.

It is possible to operate the M-Bus Central Unit on-site by the keypad and the LCD, without any auxiliary devices. A PC can be used to read the stored meter data on-site or by a modem connection ( for example with a standard terminal software). The operating system is available in different languages and can easily be updated by software.