The Inverter Acts As A Modbus Master - Veikong VFD500 Series Operation Manual

Appendix A Modbuscommunication protocol
0x7000
0x7001
Communicatoin
special address
0x7002
0x7003
0x7004
0x7005
0x7006
0x7007
0x7008
0x7009
0x700A
A.7 The inverter acts as a Modbus master
VFD500 can be used as a Modbus master station, it currently only supports broadcast network.
When P30.09 is set as 1, master mode can be enabled. The sending frame as master station is as
follows:
0x00 0x06
Instruction：
1. N indicates the slave register of the operation which is set by P30.10.
2. Val means the data sent, Val = (ValH << 8) + ValL, the function code P30.11 is to select the
contents of the data sent.
3. The idle time between frame and frame is set by function code P30.12.
VFD500 high performance vector control frequency inverter user manual
(0x28=40, 0x0F=15).
Communication command.The values and functions are as
follows：
0x0000：disable command ；
0x0001：forward running；
0x0002：reverse running；
0x0003：forward jog；
0x0004：reverse jog；
0x0005：free stop；
0x0006：decelerating stop；
0x0007：immediate stop；
0x0008：fault reset；
Communication speed given. The unit of this register can be set by
P30.14。
0.01%（-100.00% ~ 100.00%）
0.01Hz（0 ~ 600.00Hz）
1Rpm（0 ~ 65535Rpm）
CommunicationTorque given.0.01%（-300.00% ~ 300.00%）
Communication upper frequency given. The unit of this register
can be set by P30.14.
Different units range same as 0x7001.
Torque mode speed limit. The unit of this register can be set by
P30.14.
Different units range same as 0x7001.
Electric torque limit 0.1%（0~300.0%）
Power generation torque limit 0.1%（0~300.0%）
PID setting source.0.01%（-100.00% ~ 100.00%）
PID feedback source 0.01%（-100.00% ~ 100.00%）
VF separation voltage given.0.1%（0~ 100.0%）
External fault setting
0x70 N
- 106 -
ValH ValL CRCL CRCH