ProSoft Technology MVI94-MCM-MHI - Manual (Page 28)

Configuration MVI94-MCM ♦ Flex I/O Platform
User Manual Serial Communications Modbus Communication Module
Page 28 of 109 ProSoft Technology, Inc.
March 29, 2011
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 KW Demand (power) Float. upper 16 bits
40263 VAR Reactive Power Float. upper 16 bits
40265 VA 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 MCM.DATA.R
EAD D ATA [0]
TO [13]
into the array MCM_F
LOAT _D ATA [0] TO [6].
The "Length" parameter is set to the number of Floating-Point values that must
be copied from the MCM.DATA.R
EAD D ATA
array.