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User Manual of TI10 Series Variable Frequency Drive
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Appendix A
Modbus communication protocol
1
、
Support protocol
Support Modbus protocol, RTU format and ASCII code format; the broadcast address is 0,
and the slave address setting values are 1~247, 248~255 reserved.
2
、
Interface mode
RS485: asynchronous half duplex, least significant bit preferred to send; the high byte
precedes the low byte.
3
、
Frequency Variable Frequency Drive address distribution
The function code address distribution refers to the function list.
4
、
Bit definition of Variable Frequency Drive control command word (0x8000)
Control
command
word (bit)
Meaning
Control command
word (bit)
Meaning
bit0
0: no operation
1: valid running
command
bit5
0: invalid fault
shutdown
1: valid fault
shutdown
bit1
0: forward rotation
1: reverse rotation
bit6
0: invalid inching
forward rotation
1: valid inching
forward rotation
bit2
0: invalid
deceleration
shutdown
1: valid deceleration
and shutdown
bit7
0: invalid inching
reverse rotation
1: valid inching
reverse rotation
bit3
0: invalid emergency
shutdown
1: valid emergency
shutdown
bit8
0: invalid fault
reset command
1: valid fault reset
command
bit4
0: invalid free
shutdown
1: valid free
shutdown
bit9~bit15
Reserve
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