Inovance MD800 Series Communications Guide

Modbus Communication
‑23‑
return (crc_value);
}
Definition of communication parameter addresses:
R/W parameter (some parameters cannot be modified as they are manufacturer‑
specific parameters or for monitoring purpose only.)
2.5 Parameters
Modbus communication parameters are set on the power supply unit.
Table 2–4 Modbus communication parameters
Para.
No.
Name Default
Value Range Description
Fd‑00 RS485 baud rate 5
0: 300 bps
1: 600 bps
2: 1200 bps
3: 2400 bps
4: 4800 bps
5: 9600 bps
6: 19200 bps
7: 38400 bps
8: 57600 bps
9: 115200 bps
This parameter is used to set a data
transmission rate between the host controller
and the AC drive. A higher baud rate indicates
faster communication.
Note that the baud rate of the host controller
must be the same as that of the AC drive.
Otherwise, communication will fail.
Fd‑01 RS485 data format 0
0: No check (8‑N‑2)
1: Even parity check
(8‑E‑1)
2: Odd parity check
(8‑O‑1)
3: No check (8‑N‑1)
4: No check (7‑N‑2)
5: Even parity check
(7‑E‑1)
6: Odd parity check
(7‑O‑1)
7: No check (7‑N‑1)
Note that the data format set in the host
controller must be the same as that set in the AC
drive. Otherwise, communication will fail.
Fd‑02
RS485 local
address
1
1 to 247
0: Broadcast address
This value is read‑only. The station number can
be automatically assigned or manually set. When
the local address is set to 0 (broadcast address),
the broadcasting function of the host controller
is implemented.
The local address is unique (except the
broadcast address) and is used to implement
point‑to‑point communication between the host
controller and the AC drive.

Inovance MD800 Series Specifications

General

Brand	Inovance
Model	MD800 Series
Category	DC Drives
Language	English