Delta Electronics VFD-L Series Especificaciones descargar pdf (Pagina 68)

VFD-M Series

5-42

 Either ASCII or RTU Modbus protocols are used for communication. Users can select

the desired mode along through parameters Pr.92 and Pr.113.

 Each VFD-M AC drive has a pre-assigned communication address specified by Pr.88.

The master controller communicates with each AC drive according to its particular

address.

 Code Meaning:

ASCII mode:

Each 8-bit data is the combination of two ASCII characters. For example, a 1-byte data:

64 Hex, shown as ‘64’ in ASCII, consists of ‘6’ (36Hex) and ‘4’ (34Hex).

Character ‘0’ ‘1’ ‘2’ ‘3’ ‘4’ ‘5’ ‘6’ ‘7’

ASCII code 30H 31H 32H 33H 34H 35H 36H 37H

Character ‘8’ ‘9’ ‘A’ ‘B’ ‘C’ ‘D’ ‘E’ ‘F’

ASCII code 38H 39H 41H 42H 43H 44H 45H 46H

RTU mode:

Each 8-bit data is the combination of two 4-bit hexadecimal characters. For example, 64

Hex.

 2. Data Format

2.1 10-bit character frame (For 7-bit character):

( 7.N.2 : Pr.92=0)

( 7.E.1: Pr.92=1)

Start

bit

0123456

Stop

bit

10-bit character frame

( 7.O.1:Pr.92=2)

Odd

parity

Start

bit

3456

Stop

bit

10-bit character frame

Even

parity

Start

bit

01234

Stop

bit

7-bit character

10-bit character frame

Stop

bit

7-bit character

2.2 11-bit character frame (For 8-bit character):

1 2 ... 63 64 65 66 67 68 69 70 71 72 73 ... 133 134

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Delta Electronics VFD-L Series Especificaciones Pagina 68

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