Parameter Communication Address
‑7‑
1 Parameter Communication Address
1.1 Parameter Data
Parameters of the AC drive include basic function parameters and monitoring
function parameters. They are stored in corresponding parameter groups. Basic
function parameters are stored in groups F and A, as shown in the following table.
Parameter Data
Group F (read‑
write)
F0, F1, F2, F3, F4, F5, F6, F7, F8, F9, FA, Fb, FC, Fd, FE,
and FF
Group A (read‑
write)
A0, A1, A5, A6, A9, AD, and AF
The following table shows the addresses used for the monitoring function parameters
including operation commands, running status, running parameters, and alarm
information.
Monitoring Function
Parameter
Status data (read‑
only)
U0 and 8000H
Note 1
Control parameter
(write‑only)
U3 and 1000H
Note 1
Note 1: 1000H and 8000H are communication addresses specific to Modbus.
1.2 Parameter Communication Address
Groups F0 to FF and A0 to AF each include multiple function parameters. For example,
F0‑16 indicates the 16th parameter in group F0. In the communication address of a
function parameter, the high 16 bits indicate the number of the parameter group,
whereas the low 16 bits are the hexadecimal data format of the serial number of the
parameter in the group. For example, the communication address of F0‑16 is 0xF010.
In addition, writing basic function parameters and performing power‑off save cause
frequent operations on EEPROM, reducing the service life of EEPROM. Therefore,
some basic function parameters are modified by changing the values in RAM through
communication without being stored.
For parameters in group F, corresponding RAM addresses are obtained by replacing F
with 0 in the higher bit of the address. For example, the communication RAM address
of F3‑12 is 0x030C.
For parameters in group A, corresponding RAM addresses are obtained by replacing A
with 4 in the higher bit of the address. For example, the communication RAM address
of A0‑05 is 0x4005.
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