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User Manual of EM730/EM730E Series Inverter
327
Once the set frequency (F00.07) is set to 50.00Hz, the above data will be valid but not be
stored in EEPROM. That is, the inverter will run at 50.00Hz after change but at the frequency
before change if powered on again.
1.1.1.6
0x10: function code used to write multiple registers or commands
In the remote terminal unit, this function code is used to write consecutive register blocks
(1 to 16 registers).
The value requested to be written is described in the request data field. The data of each
register is divided into two bytes.
In the normal response, the function code, starting address and number of registers written
will be returned.
Request PDU
Function code
1 byte
0x10
Starting Address
2 bytes
0x0000 - 0xFFFF
Number of registers
2 bytes
1 - 16
Number of bytes
1 byte
2×N*
Register value
N*×2 bytes
N* = number of registers
Response PDU
Function code
1 byte
0x10
Starting Address
2 bytes
0x0000 - 0xFFFF
Number of
registers
2 bytes
1 - 16
Error PDU
Error code
1 byte
0x90
Exception code
1 byte
Below is an example of a request to write 00 1 and 00 3 into two registers starting from
F03.00 (i.e. setting the Y1 and Y2 output terminal function):
Request
Respond
Domain name
(0x)
Domain name
(normal)
(0x)
Domain name
(abnormal)
(0x)
Function
10
Function
10
Function
90
Starting address Hi
03
Starting address
Hi
03
Exception
code
03