S1 series standard inverter
-188-
MSB of data quantity
00H
LSB of data quantity
02H
LSB of CRC
C5H
MSB of CRC
6EH
END
T1-T2-T3-T4 (transmission time of 3.5 bytes)
9.4.5 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
inverter.
9.4.5.1 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.
Note:
1. The parameters in the P29 group are set by the manufacturer. They cannot be read or modified.
Some parameters cannot be modified when the inverter is running; some cannot be modified
regardless of the state of the inverter. 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.
9.4.5.2 Description of other function code addresses
In addition to modifying the parameters of the inverter, the master can also control the inverter, such
as start and stop it, and monitor the operation state of the inverter.
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
