Supplement to User Manual - ENGLISH Modbus Server
SU_ModbusV2-8, 2015-03-02 61
7 Request of Multiple Measured Values or Diagnostic Values
With one request, it is possible to provide
• multiple scaled measured values or
• the state of multiple scaled measured values or
• multiple diagnostic values or
• the state of multiple diagnostic values
of a channel.
The Modbus registers are predefined in a continuous address range.
For requesting data from Modbus registers of non-continuous address ranges see annex B.
Request of Multiple Measured Values
For the start addresses and offsets see Tab. 7.1 and Tab. 7.2.
The measured values are references to the scaled hi and lo word (see Tab. 6.3). They are displayed with the unit of mea-
surement defined by the user.
Tab. 7.1: Start addresses of the channels
channel start address
A 15000
B 16000
C 17000
D 18000
Z 19000
Y 20000
Tab. 7.2: Offset of the measured value
physical quantity (floating point number 32 bit) offset
lo word hi word
medium temperature T
fluid
(at the location where the flow rate is measured, supply line or return
line)
01
medium temperature T
aux
(the other temperature, return line or supply line) 2 3
medium pressure p
fluid
(at the location where the flow rate is measured, supply line or return line) 4 5
medium pressure p
aux
(the other pressure, return line or supply line) 6 7
signal amplitude 89
sound speed 10 11
flow velocity 12 13
volumetric flow rate 14 15
volumetric flow rate, totalizer for positive flow direction 16 17
volumetric flow rate, totalizer for negative flow direction 18 19
standard volumetric flow rate (gas measurement) 20 21
standard volumetric flow rate, totalizer for positive flow direction 22 23
standard volumetric flow rate, totalizer for negative flow direction 24 25
mass flow rate 26 27
mass flow rate, totalizer for positive flow direction 28 29
mass flow rate, totalizer for negative flow direction 30 31
heat flow rate 32 33
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