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Explanation for 4 X register :
40039
20
-
-
-
-
Address
(Register)
Parameter
No.
Parameter
Modbus Start Address Hex
Low Byte
High Byte
40007
4
-
-
Read / Write
-
40009
5
-
-
-
6
P.T.Primary
06
40011
00
R/Wp
08
40019
7
P.T.Secondary
00
R/Wp
00
40015
8
Password
00
R/Wp
40021
11
-
40023
12
-
-
40025
13
-
-
-
00
1A
40027
14
Sim_Output A
00
Wp
00
1C
40029
15
Sim_Output B
00
Wp
00
1E
40031
16
Analog O/P Type 1
00
R/Wp
-
40033
17
-
-
00
22
40035
18
Analog O/P Type 2
00
R/Wp
40001
1
-
-
-
-
40003
00
02
00
3
40005
2
Mode selection
-
40037
19
-
-
-
-
-
-
-
-
-
00
9
00
10
40013
40017
Device address
RS 485 Setup
-
10
0E
12
Table 3 : 4 X register addresses
40015
Device
Adress
40019
Password
This address is used to set the Device Address between 1 to 247.
This address is used to set the Baud rate, Parity, No of Stop bits.
This address is used to set & reset the password.
Valid Range of Password can be set is 0000 - 9999 .
40017
RS 485 Setup
40009
PT Secondary This address
to read and write the T secondary value
allows the user
P
.
-
-
R/Wp
R/Wp
R/Wp
Address
Parameter
Description
This is used to select the Mode of operation.
Normal mode = 1.
Simulation mode = 2.
40003
Mode Selection
-
This address allows the user to
PT Primary value.
The maximum stable value is 400kV.
read and write the
40007
PT Pimary
40027
Sim_Output A
40031
Analog O/P
Type 1
This address is used to set the simulation Output A to 10% of Output
by writing 1000 and 100% of Output by writing 10000 .
This address is used to set the simulation Output B to 10% of Output
by writing 1000 and 100% of Output by writing 10000 .
This address is used to set the Analog O/P Type 1 as Voltage/Current.
Voltage = 1.
Current = 2.
40029
Sim_Output B
40035
Analog O/P
Type 2
This address is used to set the Analog O/P Type 2 as Voltage/Current.
Voltage = 1.
Current = 2.
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Example : Writing Device address
Device address : Start address= 0E (Hex) Number of registers = 02
Query:( Change Device address to 2 )
Byte Count : Total number of data bytes received.
Data register 1 High Byte : Most significant 8 bits of Data register 1 of the parameter requested.
Data register 1 Low Byte : Least significant 8 bits of Data register 1 of the parameter requested.
Data register 2 High Byte : Most significant 8 bits of Data register 2 of the parameter requested.
(Note : Two consecutive 16 bit register represent one parameter.
)
Data register 2 Low Byte : Least significant 8 bits of Data register 2 of the parameter requested.
Start Address High : Most significant 8 bits of starting address of the parameter requested.
Start Address low :Least significant 8 bits of starting address of the parameter requested.
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.
)
Response:
00(Hex)
00(Hex)
67 (Hex)
E3 (Hex)
40 (Hex)
01 (Hex)
10 (Hex)
00 (Hex)
0E (Hex)
00 (Hex)
02(Hex)
04 (Hex)
00(Hex)
Data Register-2 Low Byte
Device Address
Function Code
Starting Address Hi
Starting Address Lo
Number of Registers Hi
Number of Registers Lo
Byte Count
CRC High
CRC Low
Data Register-1 Low Byte
Data Register-2 High Byte
Data Register-1High Byte
Device Address
Function Code
Start Address High
Start Address Low
Number of Registers Hi
Number of Registers Lo
CRC Low
CRC High
01 (Hex)
10 (Hex)
00 (Hex)
0E(Hex)
00 (Hex)
02(Hex)
20 (Hex)
0B (Hex)