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Communication with M-Bus
A43/A44
196
2CMC48001M0201
User Manual
Revision: C
10.2.3.1 Selection and secondary addressing
General
It is possible to communicate with the meter using secondary addressing. The
secondary addressing takes place with the help of a selection:
68h 0Bh 0Bh
68h
53h FDh 52h ID
Manu-
Gener- Me-
CS 16h
1-4
facturer ation
1
dium
1-2
1. Generation means the same thing as version.
The master sends a SND_UD with the control information 52h to the address 253
(FDh) and fills the specific meter secondary address fields (identification number,
manufacturer, version and medium) with the values of the meter that is to be ad-
dressed. The address (FDh) and the control information (52h) is the indication for
the meter to compare the following secondary address with its own, and to change
into the selected state should it match. In this case the meter answers the selection
with an acknowledgement (E5h), otherwise it does not reply. Selected state means
that the meter can be addressed with the bus address 253 (FDh).
Wild cards
During selection individual positions of the secondary addresses can be occupied
by wildcards. Such a wildcard means that this position will not be taken into ac-
count during selection. In the identification number each individual digit can be
wild-carded by a wildcard nibble Fh while the fields for manufacturer, version and
medium can be wild -carded by a wildcard byte FFh. The meter will remain
selected until it receives a selection command with non-matching secondary ad-
dresses, a selection command with CI=56h, or a SND_NKE to address 253.
Summary of Contents for A43
Page 1: ...A43 A44 User Manual ...
Page 40: ...Meter Settings A43 A44 40 2CMC48001M0201 User Manual Revision C ...
Page 55: ...Technical Description 2CMC48001M0201 55 A43 A44 Revision C User Manual ...
Page 58: ...Technical Description A43 A44 58 2CMC48001M0201 User Manual Revision C ...
Page 61: ...Technical Description 2CMC48001M0201 61 A43 A44 Revision C User Manual ...
Page 75: ...Technical Description 2CMC48001M0201 75 A43 A44 Revision C User Manual ...
Page 84: ...Measurement Methods A43 A44 84 2CMC48001M0201 User Manual Revision C ...
Page 91: ...Measurement Methods 2CMC48001M0201 91 A43 A44 Revision C User Manual ...
Page 95: ...Measurement Methods 2CMC48001M0201 95 A43 A44 Revision C User Manual ...
Page 102: ...Communication with Modbus A43 A44 102 2CMC48001M0201 User Manual Revision C ...
Page 107: ...Communication with Modbus 2CMC48001M0201 107 A43 A44 Revision C User Manual ...
Page 131: ...Communication with Modbus 2CMC48001M0201 131 A43 A44 Revision C User Manual ...
Page 147: ...Communication with Modbus 2CMC48001M0201 147 A43 A44 Revision C User Manual ...
Page 154: ...Communication with Modbus A43 A44 154 2CMC48001M0201 User Manual Revision C ...
Page 157: ...Communication with Modbus 2CMC48001M0201 157 A43 A44 Revision C User Manual ...
Page 161: ...Communication with Modbus 2CMC48001M0201 161 A43 A44 Revision C User Manual ...
Page 166: ...Communication with Modbus A43 A44 166 2CMC48001M0201 User Manual Revision C ...
Page 180: ...Communication with M Bus A43 A44 180 2CMC48001M0201 User Manual Revision C ...
Page 182: ...Communication with M Bus A43 A44 182 2CMC48001M0201 User Manual Revision C ...
Page 188: ...Communication with M Bus A43 A44 188 2CMC48001M0201 User Manual Revision C ...
Page 195: ...Communication with M Bus 2CMC48001M0201 195 A43 A44 Revision C User Manual ...
Page 254: ...Communication with M Bus A43 A44 254 2CMC48001M0201 User Manual Revision C ...
Page 257: ...Communication with M Bus 2CMC48001M0201 257 A43 A44 Revision C User Manual ...