TECHTOP TD350 - Chapter 9 Communication Protocol; Modbus Protocol Introduction

TD350 Series VFD Function parameter list
-201-
Function
code
Name
Detailed parameter description
Default
value
Modify
broadcast communication address, and all the
slaves on the Modbus bus will accept this frame,
but the slave never responds.
Local communication address is unique in the
communication network, which is the basis for
point-to-point communication between the upper
computer and the VFD.
Note: The slave address cannot be set to 0.
P14.01
Communication
baud rate setting
This parameter is used to set the data transmission
speed between upper computer and the VFD.
0: 1200BPS
1: 2400BPS
2: 4800BPS
3: 9600BPS
4: 19200BPS
5: 38400BPS
6: 57600BPS
7: 115200BPS
Note: Baud rate of the upper computer must be the
same with the VFD; otherwise, communication
cannot be performed. The larger the baud rate, the
faster the communication speed.
4
○
P14.02
Data bit check
setting
The data format of upper computer must be the
same with the VFD; otherwise, communication
cannot be performed.
0: No parity check (N, 8, 1) for RTU
1: Even parity (E, 8, 1) for RTU
2: Odd parity (O, 8, 1) for RTU
3: No parity check (N, 8, 2) for RTU
4: Even parity (E, 8, 2) for RTU
5: Odd parity (O, 8, 2) for RTU
1
○
P14.03
Communication
response delay
0–200ms
It refers to the time interval from when the data is
received by the VFD to the moment when the data
is sent to the upper computer. If the response delay
is less than the system processing time, the
response delay will be subject to system processing
time; if the response delay is longer than the
system processing time, data will be sent to the
5
○