Sourcetronic ST600 - Page 295

Frequency Inverter ST600 Series High-Performance Multifunction VFD Communication protocol
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9.4.4 Data address definition
This section describes the address definition of communication data. The addresses are used for
controlling the running, obtaining the state information, and setting related function parameters of the
VFD.
9.4.4.1 Function code address representation rules
The address of a function code consists of two bytes, with the MSB on the left and LSB on the right.
The MSB ranges from 00 to ffH, and the LSB also ranges from 00 to ffH. The MSB is the hexadecimal
form of the group number before the dot mark, and LSB is that of the number behind the dot mark.
Take P05.06 as an example, the group number is 05, that is, the MSB of the parameter address is the
hexadecimal form of 05; and the number behind the dot mark is 06, that is, the LSB is the hexadecimal
form of 06. Therefore, the function code address is 0506H in the hexadecimal form. For P10.01, the
parameter address is 0A01H.
Function
code
Name
Description
Setting
range
Default
value
Modify
P10.00
Simple PLC mode
0: Stop after running once
1: Keep running in the final value after
running once
2: Cyclic running
0-2
0
○
P10.01
Simple PLC
memory selection
0: No memory after power down
1: Memory after power down
0-1
0
○
Note:
1. The parameters in the P99 group are set by the manufacturer. They cannot be read or modified.
Some parameters cannot be modified when the VFD is running; some cannot be modified
regardless of the state of the VFD. Pay attention to the setting range, unit, and related description
of a parameter when modifying it.
2. The service life of the Electrically Erasable Programmable Read-Only Memory (EEPROM) may be
reduced if it is frequently used for storage. For users, some function codes do not need to be stored
during communication. The application requirements can be met by modifying the value of the on-
chip RAM, that is, modifying the MSB of the corresponding function code address from 0 to 1. For
example, if P00.07 is not to be stored in the EEPROM, you need only to modify the value of the
RAM, that is, set the address to 8007H. The address can be used only for writing data to the on-
chip RAM, and it is invalid when used for reading data.
9.4.4.2 Description of other function code addresses
In addition to modifying the parameters of the VFD, the master can also control the VFD, such as start
and stop it, and monitor the operation state of the VFD. The following table describes other function
parameters.
Function
Address
Data description
R/W
Communication-
based control
command
2000H
0001H: Forward running
R/W
0002H: Reverse running
0003H: Forward jogging
0004H: Reverse jogging
0005H: Stop