User Manual

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Building Technologies M-bus System CE1P5361en
HVAC Products 1 System 08.02.2007
1 System
1.1 Introduction
The M-bus system is used for the remote readout, remote operation and monitoring of
consumption meters and controllers having an M-bus connection facility conforming to
EN 1434-3 and of consumption meters of the Siemeca™ AMR system.
The present Basic Documentation contains basic information which is required for plan-
ning and operating the M-bus system. First, a description of the system itself, of the
system functions and system applications is given. Then, information is provided about
the functions of the PC software, of the M-bus central units and of the connected me-
ters and controllers. Finally, all data required for engineering and for the communication
between PC and M-bus central units are given.
1.2 System overview
The OZW10 or OZW111 is the central unit on the M-bus. It communicates with the
consumption meters and controllers via M-bus:
 The OZW10 can be connected to a maximum of 750 M-bus devices and communi-
cates with them via the RS-485 / M-bus signal converter WZC-P… With V4.0 or
higher, consumption meters of the Siemeca™ AMR system can also be integrated
via WTX16 or WTT16 radio nodes
 The OZW111 can be connected to a maximum of 5 M-bus devices and has an M-
bus connection facility. Consumption meters of the Siemeca™ AMR system cannot
be connected
The M-bus central units can be connected to a PC or the ACS7… plant operating soft-
ware, either directly or via modem.
5361Z27
OZW10
OZW10 OZW111
WZC-P250
WZC-P60
WZC-R250
RS-485
OCI97
OCI97
M-Bus
M-Bus
M-Bus
RS-485
WTT16
WTT16
ACS7…
ACS Operation
ACS Alarm
ACS Batchjob
ACS Alarm