Delta Electronics VFD-L Series Especificaciones descargar pdf (Pagina 70)

VFD-M Series

5-44

3.3 ADR (Communication Address)

Valid communication addresses are in the range of 0 to 254. An address equals to 0

means a broadcast to all AC drives (AMD) in the network. In this case, the AMD will

not reply to the master device.

For example, communication to AMD with address 16 decimal:

ASCII mode: (ADR 1, ADR 0)=’1’,’0’ => ‘1’=31H, ‘0’=30H

RTU mode: (ADR)=10H

3.4 CMD (Command code) and DATA (data characters)

The format of data characters depends on the command code. The available command

codes are described as followed: Command code: 03H, read N words. The maximum

value of N is 12. For example, reading continuous 2 words from starting address 2102H

of AMD with address 01H.

ASCII mode:

Command message: Response message:

STX ‘:’ STX ‘:’

‘0’ ‘0’ ADR 1

ADR 0

‘1’

ADR 1

ADR 0

‘1’

‘0’ ‘0’ CMD 1

CMD 0

‘3’

CMD 1

CMD 0

‘3’

‘2’ ‘0’

‘1’

Number of data

(Count by byte)

‘4’

‘0’ ‘1’

Starting data

address

‘2’ ‘7’

‘0’ ‘7’

‘0’

Content of starting

data address

2102H

‘0’

‘0’ ‘0’

Number of data

(Count by word)

‘2’ ‘0’

‘D’ ‘0’ LRC CHK 1

LRC CHK 0

‘7’

Content of data

address 2103H

‘0’

CR ‘7’ END 1

END 0

LRC CHK 1

LRC CHK 0

‘1’

END 1

END 0

1 2 ... 65 66 67 68 69 70 71 72 73 74 75 ... 133 134

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