ProSoft Technology MVI56E-MCMXT User Manual

MVI56E-MCM ♦ ControlLogix Platform Configuration as a Modbus Master
Modbus Communication Module User Manual
ProSoft Technology, Inc. Page 53 of 209
2.4.4 Read Floats with Single Modbus Register Address
(Enron/Daniel Float)
Some Modbus Slave devices use a single Modbus address to store 32 bits of
data. This type of data is typically referred to as Enron or Daniel Floating-Point.
A device that uses this addressing method may have the following Modbus
Memory Map.
Address
Data Type
Parameter
47001
32 bit REAL
Demand
47002
32 bit REAL
Reactive Power
47003
32 bit REAL
Apparent Power
47004
32 bit REAL
Power Factor
47005
32 bit REAL
Voltage: Line to Line
47006
32 bit REAL
Voltage: Line to Neutral
47007
32 bit REAL
Current
This type of device uses one Modbus address per floating-point register. To read
these values from the Slave device, configure the following command within the
module.
Notice that the count is now set to a value of 7. Because the Slave device utilizes
only 7 Modbus addresses, a count of 7 will cause the Slave to respond with 14
registers (28 bytes) of information.
Important: This command will still occupy 14 register within the MCM.DATA.READDATA array. You
must not use addresses 1000 to 1013 in the IntAddress field for any other Modbus Master
commands.
The COP statement for this type of data is the same as shown in Read Multiple
Floating-Point Registers (page 51).

ProSoft Technology MVI56E-MCMXT Specifications

General

Brand	ProSoft Technology
Model	MVI56E-MCMXT
Category	Control Unit
Language	English