T H E M O D E R M - B U S T E C H N O L O Y
10
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The internal M
-
Bus meter
PiiGAB M-Bus 900S/T also functions as
an
M-Bus meter on the M-Bus network with the
default
primary address 251. You can read out the information according to the table below. There is
also the possibility to influence the built in relay.
4.1.1
Simple version
Table 4-1
Data record No
Datatype
Description
1
BCD8
Identification number
2
Int16
The M-
Bus net’s voltage
(V*0,1)
3
Int16
The M-
Bus net’s current consumption
(mA*0,1)
4
Int32
Error flags
Bit 0: Master overload
Bit 1: Master short circuit
5
Int8
Digital input 1
6
Int8
Digital input 2
7
Int8
Relay status
8
Int16
Temperature on the M-Bus driver card
9
Int16
Temperature on the 40V DC/DC converter
10
Int8
Status for the four Master outputs.
Chapter
4