Modbus Communication
‑31‑
Pa
rame
ter
Parameter
Name
Default
Value
Value Range Description
FD‑02 RS485 local
address
1 1 to 247 The uniqueness of the local address is the prerequisite for
point‑to‑point communication between the host
controller and AC drive.
FD‑03 RS485
response
delay
2 0 ms to 20 ms (valid for
Modbus)
This parameter defines the interval from when the AC
drive finishes receiving data to when it sends data to the
host controller.
● If the response delay is shorter than the system
processing time, the system processing time prevails.
● If the response delay is longer than the system
processing time, the AC drive sends data to the host
controller only after the response delay elapses.
FD‑04 RS485
communica
tion timeout
time
0 0.0 (invalid)
0.1s to 60.0s
When this parameter is set to a valid value, the system
reports the communication error Err160 if the interval
between two consecutive communications exceeds the
communication timeout time. It is set to 0.0s under
normal circumstances. This parameter is used to monitor
communication status in a system with continuous
communication.
3.6 Communication Configurations
3.6.1 Configuration of RS485 Communication Between AC Drive and H5U
Software Acquisition and Hardware Connection
1. Log in to the official website of Inovance (https://newweb.inovance.com/hc/
serviceSupport/download) to obtain the H5U programming software.
2. Connect RS485+ and RS485– on the H5U terminal to RS485+ and RS485– on the AC
drive, as shown in the following figure.
Figure 3‑6 Connecting communication interfaces
Master-Slave Configuration
1. Open AutoShop, click ""NNeeww PPrroojjeecctt"", check that ""SSeerriieess aanndd mmooddeellss"" is H5U, and
click ""OOKK"" to enter the programming interface.
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