13
Siemens
A6V11157961_en--_d
Building Technologies
2018-07-24
M-bus
Reference standard
EN13757-4 Physical and Link Layer (Operating modes:
C, S,T mode) for wireless M-bus
EN13757-3 (Application layer)
Baud rate
300 bps…9600 bps
Max. number of M-bus devices connected directly to the
web server with a cable
20 (unit M-bus loads)
Max. number of level converters on the web server
6
Max. number of wired M-bus devices per level converter 60
Max. number of RF converters on the web server
23
Max. number of wireless devices per RF converter
500
Max. number of readable devices
Wired: 380 M-bus loads or 250 logical M-bus devices
Wireless: 2,500 devices
Bus power
Min. 24 V
Max. 42 V
Bus supply current
Min. 0 mA
Max. 30 mA
Protection against short circuits
Yes
Ambient conditions
Operation
as per EN 60721-3-3
Climatic conditions
Class 3K5
Temperature
-20…+55 °C
Air humidity
5...95 % r.h.
Mechanical conditions
Class 3M2 as per EN 60721-3-3
Transportation
as per EN 60721-3-2
Climatic conditions
Class 2K3
Temperature
-25..+65 °C
Air humidity
5...95 %
Mechanical conditions
Class 2M2
Storage
To EN 60721-3-1
Climatic conditions
1K3
Temperature
-25 … 65 °C
Air humidity
5...95 % r.h.
Mechanical conditions
Class 1M2
Degree of protection
IP class
IP20 as per EN 60529
Protection class
III as per EN 62368-1
Mounting
Mounting type
On 35mm DIN rails (EN60715)