V&T E5 Series User Manual page 149

Function 0xT7 read and write multiple parameters

PDU Part Contents
Request (Response):
Function code
The start address of reading register
The number of reading register
The start address of writing register
The number of writing register
The number of writing register bytes
The writing register contents
Response:
Function code
Read the number of register bytes
Read data contents
Operating sequence: Read firstly and rewrite secondly, but the register 0xF080 is an exception, which
shall be written firstly and read secondly so as to facilitate the management of the operation panel.
Note:

 In case continuous storage is required, will store from the lower address to upper address, with
maximum of T6 parameters being stored in one command.
 If change parameter frequently, such as change setting frequency repeat, the parameter PC.03 should
be set to 303, so the communication change in RAM or use 0x4T(0x4T) command replace 0x06
(T0) to not stored the value into EEPROM, prevent from damage inner EEPROM.
 The life of EEPROM is about T00000 times, if change parameters frequently, EEPROM service life will
be reduced quickly.
5. Parameters Address Definition
Address range
0x0000~0xTA00
0x4000~0x5A00
0x8000~0x800D
0x8T0B~0x8T9F
0xF000~0xF00T
0xF080~0xF084
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E5 Series High Performance Universal Inverter
All the parameters with an address, and the parameter values can be read and written through
series communication (the write function according to the parameter property define in Chapter
5). The address express with hexadecimal
High-order bytes: Parameter group number
Low-order bytes: Index in group, convert to hexadecimal
Group P0 ...
number
High-order 0x
bytes 00
For example, the Modbus address of Pb.T3 is : (0x0b<<8)+T3=0x0bT7
The parameter address with an attribute word address. The attribute word address:
High-order bytes: Parameter group number+0x40
Low-order bytes: Index in group, convert to hexadecimal
For example, the attribute word address of Pb.T3 is : ((0x0b+0x40)<<8)+T3=0x4bT7
The attribute words are defined in the following order: Bit0 ~ BitT are unit, Bit3 ~ Bit4 are
modifying attribute, Bit5 ~ Bit6 are precision and Bit7 ~ BitT5 are reserved
Control word register
Status word register
Special register for input password authentication.
Read the current value, upper limit, lower limit and factory setting of parameter.
Appendix A Modbus Communication Protocol
Data Length (Byte)
T
T
T
T
T
T
T*Number of registers
T
T
T*Read bytes
Appendix Table−1
Meaning
PE d0 dT dT
0x 0x 0x 0x
0e 0f T0 TT
User's Manual
Range
0xT7
0x0000~0xFFFF
0x0T~ 0xT0
0x0000~0xFFFF
0x0T~0xT0
T*Number of registers
0xT7
0x0T~0xT0
0x0000~0xFFFF
H0 HT HT A0
0x 0x 0x 0x
TT T3 T4 T5
C0 U0 UT
0x 0x 0x
T6 T7 T8