User Manual

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Building Technologies M-bus System CE1P5361en
HVAC Products 7 Technical data 08.02.2007
7.5 Storage space requirements of M-bus
devices
7.5.1 General
Internally, the OZW10 stores all device data required for the local display and the
memory card. Data storage is dynamic. This means that each M-bus device only uses
the amount of storage space it needs. Calculation of the maximum number of possible
M-bus devices per OZW10 based on the storage space requirement of the connected
devices is described in subsection 5.3.1 "M-bus central unit OZW10".
With certain types of M-bus devices (e.g. SONOGYR

energy, MEGATRON

2), the
amount of data to be transmitted can be parameterized. With these types of devices,
the amount of storage space required is dependent on the type of device and the de-
vice version on the one hand, and, on the other, on the device-specific settings (e.g.
application selection M-bus). For calculating the storage space requirements of these
devices, the credits of all selected applications are added up.
The following subsections describe the credit requirements of the individual applica-
tions.
7.5.2 SONOGYR
®
energy WSF, WSG, WSJ
The information given applies to V2, V3 and V4
Application
Block
Remark, note
Credit Default User- defined
Basic requirement – Readout time, fault status 17 17 17
Cumulated values 1 Energy and volume 12 12
Mean values 2 Power and flow rate 10
Device info 3 Device description, serial number,
hours run
43 43
Measured values 4 Temperatures, power, flow rate 23 23
Service info 5 Setpoints 11
Set day values 6 Energy and volume 35 35
Maximum values 7 Power or flow rate 10
Monthly values 8 Energy or volume 106
Monthly values
tariff
9 Energy or volume 0
Tariff values 10 Energy or volume 62
Total 130