Communication
‑695‑
Communication Address of the
Output Control
Command Content
AO1 2002H
0 to 7FFF indicates 0% to 100%.
AO2 2003H
FMP 2004H
● Parameter initialization
This function is required when you need to initialize parameters of the drive by
using the host controller.
If FP‑00 (user password) is set to a non‑zero value, password verification is
required. The host controller performs parameter initialization within 30s after
successful password verification.
The communication address of password verification through communication is
1F00H. Directly write the correct user password to this address to perform
password verification. The communication address of parameter initialization
through communication is 1F01H, as defined in the following table.
Communication
Address of Parameter
Initialization
Command Definition
1F01H 0: No operation
1: Restore default settings (mode 1)
2: Clear records
4: Back up current user parameters
501: Restore user backup parameters
503: Restore default settings (mode 2)
4.1.2 Modbus Communication Protocol
Overview
The AC drive provides RS485 communication interfaces and supports the Modbus‑
RTU slave communication protocol. You can implement centralized control, such as
setting commands, modifying parameters, and reading running state and fault
information of the AC drive, by using a computer or PLC.
This protocol defines the content and format of transmitted messages during serial
communication, including master polling (or broadcasting) format and master coding
method (parameters for action requirements, transmission data, and error check).
Slave response uses the same structure and includes action confirmation, returned
data, and error check. If an error occurs when the slave receives a message, or the
slave cannot complete the action required by the master, the slave returns a fault
message as a response to the master.
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