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Configuring the MVI56E-MCMR Module MVI56E-MCMR ♦ ControlLogix Platform

User Manual Modbus Communication Module with Reduced Data Block

Page 76 of 225 ProSoft Technology, Inc.

May 13, 2014

Read Multiple Floating-Point Registers

The following table is an example to read Multiple Floating-Point values and

device addresses. The table shows 7 consecutive floating-point values (14

Modbus addresses).

Value

Description

Type

40261

Demand (power)

Float. upper 16 bits

40263

VAR

Reactive Power

Float. upper 16 bits

40265

Apparent Power

Float. upper 16 bits

40267

Power Factor

Float. upper 16 bits

40269

VOLTS

Voltage, line to line

Float. upper 16 bits

40271

VOLTS

Voltage, line to neutral

Float. upper 16 bits

40273

AMPS

Current

Float. upper 16 bits

Configure the command to read these 7 floats as follows.

Configure an array of 7 floats within the ControlLogix processor as shown in the

following illustration.

The following COP statement will copy the data from MCMR.DATA.READDATA[0]

TO [13] into the array MCM_FLOAT_DATA[0] TO [6].

The "Length" parameter is set to the number of Floating-Point values that must

be copied from the MCMR.DATA.READDATA array.

1 2 ... 71 72 73 74 75 76 77 78 79 80 81 ... 224 225

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