Delta 1.07 VFD-D D Manuale Utente Scaricare il pdf (Pagina 92)

Chapter 4 Parameter Settings|DD Series

4-68

11-bit character frame (For RTU):

Start

bit

0123456

Stop

bit

Stop

bit

8-bit character

11-bit character frame

( 8.N.2 )

Start

bit

01234

Even

parity

Stop

bit

11-bit character frame

( 8.E.1 )

Start

bit

01234

Stop

bit

11-bit character frame

( 8.O.1 )

Odd

parity

8-bit character

 3.1 Communication Protocol

Communication Data Frame:

ASCII mode:

STX Start character ‘:’ (3AH)

Address Hi

Address Lo

Communication address:

8-bit address consists of 2 ASCII codes

Function Hi

Function Lo

Command code:

8-bit command consists of 2 ASCII codes

DATA (n-1)

…….

DATA 0

Contents of data:

Nx8-bit data consist of 2n ASCII codes

n<=16, maximum of 32 ASCII codes

LRC CHK Hi

LRC CHK Lo

LRC check sum:

8-bit check sum consists of 2 ASCII codes

END Hi

END Lo

End characters:

END1= CR (0DH), END0= LF(0AH)

RTU mode:

START A silent interval of more than 10 ms

Address Communication address: 8-bit address

Function Command code: 8-bit command

DATA (n-1)

…….

DATA 0

Contents of data:

n×8-bit data, n<=16

CRC CHK Low

CRC CHK High

CRC check sum:

16-bit check sum consists of 2 8-bit characters

END A silent interval of more than 10 ms

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Delta 1.07 VFD-D D Manuale Utente Pagina 92

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