
Reading Parameter data through User Assignable Registers:
In assigning query Voltage2 and Power Factor1 parameters were assigned to 0x 200 and
0x201(Table10) which will point to user assignable 3xregisters 0x200 and 0x202 (table9).
So to read Voltage2 and PowerFactor1 data reading query should be as below.
Query
:
Device Address
Function Code
Start Address High
Start Address Low
Number of Registers Hi
Number of Registers Lo
CRC Low
CRC High
01 (Hex)
04 (Hex)
02 (Hex)
00 (Hex)
00 (Hex)
04 (Hex) **
F0 (Hex)
71 (Hex)
Start Address High : Most significant 8 bits of
User assignable register.
starting address of
Start Address low :Least significant 8 bits of starting address of User assignable register.
Number of register Hi : Most significant 8 bits of Number of registers requested.
Number of register Lo : Least significant 8 bits of Number of registers requested.
**Note : Two consecutive 16 bit register represent one parameter.
Since two parameters are requested four registers are required
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