Inovance MD800 Series - Page 442

Function Applications
-441-
Para. No. Name
Default
Value Range
Fd-10
Communication type
1
1: CANopen
2: CANlink
3: Communication card mode
Application
Step 1: Set F0-03 to 9 to select communication as the main frequency reference source.
Step 2: Send a write command to the AC drive through the host controller.
The following takes the Modbus protocol as an example to describe how to set the main frequency
through communication. To make the AC drive run in the reverse direction through communication,
send the following write command: 01 06 20 00 00 02 03 CB.
The bytes are described as follows.
Byte
Description
01H (configurable)
AC drive address
06H
Write command
2000H
Control command communication address
02H (reverse RUN)
Control command
03CBH
CRC check
Figure 4-21 Parameter settings for using communication as the main frequency reference source
Table 4–4 Correspondence between host commands and slave responses
Host Command
Slave Response
ADDR 01H ADDR 01H
CMD 06H CMD 06H
High bits of parameter
address
20H
High bits of parameter
address
20H
Low bits of parameter
address
00H
Low bits of parameter
address
00H
High bits of data content
00H
High bits of data content
00H
Low bits of data content
02H
Low bits of data content
02H
CRC high bits
03H
CRC high bits
03H
CRC low bits
CBH
CRC low bits
CBH