Hitachi S1 Series Basic Manual page 193

S1 series standard inverter
MSB of data quantity
LSB of data quantity
LSB of CRC
MSB of CRC
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
Communication-based
control command
END
Address
0001H: Forward running
0002H: Reverse running
2000H 0003H: Forward jogging
0004H: Reverse jogging
0005H: Stop
T1-T2-T3-T4 (transmission time of 3.5 bytes)
Data description
-188-
00H
02H
C5H
6EH
R/W
R/W