Veichi ACH200 Series, Руководство пользователя

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Chapter 7 Modbus Communication Protocol ACH200 Series High Voltage Variable Frequency Speed Control System Operating Manual
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Slave address 01H
Command code 06H
Write data address high bit 30H
Write data address low bit 00H
Data content high bit 13H
Data content low bit 88H
CRC CHK low bit 8BH
CRC CHK high bit 9CH
END 3.5 bytes transmission time
RTU slave response information (when normal):
START 3.5 bytes transmission time
Slave address 01H
Command code 06H
Write data address high bit 30H
Write data address low bit 00H
Data content high bit 13H
Data content low bit 88H
CRC CHK low bit 8BH
CRC CHK high bit 9CH
END 3.5 bytes transmission time
RTU slave response information (when abnormal):
START 3.5 bytes transmission time
Slave address 01H
Command code 86H
Error code 01H
CRC CHK low bit 83H
CRC CHK high bit A0H
END 3.5 bytes transmission time
Loop self-test command code: 06H, sending back the same slave response information as the
master command information, used to detect whether the signal transmission between the master
and the slave is normal, the detection code and data can be set arbitrarily, the detection code has
nothing to do with the parameter address of the AC drive.
For example, 5000 (1388H) is written to the 0000H detection code of the slave address 1 AC
drive. Then the structure of the frame is described as follows:
RTU master command information:
START 3.5 bytes transmission time
Slave address 01H
Command code 08H
Detection code high bit 00H
Detection code low bit 00H
Data high bit 13H
Data low bit 88H
CRC CHK low bit EDH
CRC CHK high bit 5DH
END 3.5 bytes transmission time
RTU slave response information (when normal):
START 3.5 bytes transmission time
Slave address 01H