Alpha 6000S series, Руководство пользователя

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Appendix 4 Use of MODBUS Communication
204
[08H]
Loop Test Command: the command content is fed back originally in the form of response and is used for test of
signal transmission and returning between the main controller and the frequency inverter. Arbitrary values can be
used as the test code and data.
Example: loop feedback test
Command Content
Frequency Inverter
Address
01
Command Code
08
Test Code
High Bit 00
Low Bit 00
Test Data
High Bit 12
Low Bit 34
CRC
High Bit ED
Low Bit 7C
Normal Response Content
Frequency Inverter
Address
01
Command Code
08
Test
Code
High Bit 00
Low Bit 00
Test
Data
High Bit 12
Low Bit 34
CRC
High Bit ED
Low Bit 7C
Abnormal Response Content
Frequency
Inverter Address
01
Command Code
88
Abnormality
Code
03
CRC
High Bit 06
Low Bit 01
[10H]
Single-character Writing Command: write the content into the specified register, and write the specified data in the
specified register. The data saved should be among the order of record codes. The command content should be
arrayed in the sequence of high 8 bits and low 8 bits.
Example: set the frequency as 50.0Hz
Command Content
Frequency Inverter
Address
01
Command Code
10
Start
Address
High Bit 00
Low Bit 02
Number of
Addresses
High Bit 00
Low Bit 01
Number of Data
02
Content of
Data
High Bit 13
Low Bit 88
CRC
High Bit AA
Low Bit E4
Normal Response Content
Frequency Inverter
Address
01
Command Code
10
Start
Address
High Bit 00
Low Bit 02
Number
of
Addresses
High Bit 00
Low Bit 01
CRC
High Bit A0
Low Bit 90
Abnormal Response Content
Frequency
Inverter Address
01
Command Code
90
Abnormality
Code
03
CRC
High Bit 0C
Low Bit 01
Notes: The number of data doubles that of address.
[10H]
Data Saving Command: write the MODBUS register address corresponding to the function parameters into the
special saving address of 0xFF, and save the parameter content into EEPROM. It is equivalent to ENTER of the
keypad to save the data without being lost. The command content is arrayed in the order of high 8 bits and low 8 bits.
00FFH is specially used for data saving and is effective when Pb.06=0.
Example: set the frequency as 30.0Hz and save it in EEPROM.