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Note:
1. Modbus protocol. Only supports RTU mode, not ASCII mode.
2. The corresponding law of Modbus holding register address and inverter
parameters: the high 8-bit address (hexadecimal) of the holding register
corresponds to the group index of the inverter parameter; the low 8-bit
address corresponds to the number in the parameter group. For example, the
hexadecimal holding register address 0x0c14 corresponds to the inverter
parameter P12.20 (group 12, parameter 20, PWM mode).
Modbus holding register address-inverter application function correspondence table
usRegHoldingB
uf[]
Modbus holding
register address
Modbus485 operation
command
Function Description
0
0x2000(8192)
bit 1:0
b00: No function
struct sAPP_CMD example:
ModbusAppCmd
b01: shutdown command
b10: start command
b11: Jog command
bit 3:2
Reserved
bit 5:4
b00: No function
b01: Forward command
b10: reverse command
b11: change direction
bit 7:6
b00: No function
b01: reset an error flag
b10: reset all error flags
b11:reserved
1
0x2001(8193)
Modbus485
frequency command
x0.1HZ
2
0x2002(8194)
Modbus485
acceleration time
x0.1s
3
0x2003(8195)
Modbus485
deceleration time
x0.1s
4
0x2004(8196)
5
0x2005(8197)
6
8198
7
8199
8
8200
ErrorFlag
Error code
Read only
9
8201
Ms
Inverter internal state
10
8202
AimFreq
Target frequency
11
8203
RunFreq
Output frequency
12
8204
OutCurrent
Output current
