Delta DPM-C320 Operation Manual page 44

D 5 20 /C5 20W /C32 0 Op era tio n M anu al
P M - C
If you need the measured parameters of average phase current (Modbus addresses 0x126~0x127), you
can use the function code 0x06 (single writing) or 0x10 (multiple writings) to write the Modbus address
0x126 in 0x50E and the Modbus address 0x127 in 0x50F. The order matters; thus the parameter-related
Modbus addresses in 0x50E and 0x50F are not interchangeable. After calculation, the value is stored in
0x602 for 0x126 and in 0x603 for 0x127. Use the function code 0x03 (multiple readings) to read the
Modbus addresses 0x602~0x603. And after IEEE 754 conversion, you can have values of the average
phase voltage.
See the table below for a quick understanding on the setting.
Use Function Codes to WRITE Parameters in Modbus address and store values in Modbus add.
Function Codes
0x06 (single)
_4
0x10 (multiple)
Use Function Code to READ Parameters From Modbus add.
Function Code
0x03
4 - 1 0
WRITE Parameters in Modbus address
0x106 (average phase voltage) in 0x50C
0x107 (average phase voltage) in 0x50D
or
0x126 (average phase current) in 0x50E
0x127(average phase current) in 0x50F
Read Parameters From Modbus address
0x106 (average phase voltage) from 0x600
0x107 (average phase voltage) from 0x601
0x126 (average phase current) from 0x602
0x127 (average phase current) from 0x603
Values stored in
0x600
0x601
0x602
0x603
Values obtained
average phase voltage
IEEE 754
conversion
average phase voltage
average phase current
average phase current