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Delta Electronics AC Motor Drive VFD-E User Manual

Page 168

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Chapter 4 Parameters|

Revision June 2008, 04EE, SW--PW V1.11/CTL V2.11

4-115

11-bit character frame (For RTU):

Start

bit

0

1

2

3

4

5

6

Stop

bit

Stop

bit

8-bit character

11-bit character frame

( 8.N.2 )

Start
bit

0

1

2

3

4

5

6

Even

parity

Stop

bit

11-bit character frame

( 8.E.1 )

Start
bit

0

1

2

3

4

5

6

Stop
bit

11-bit character frame

( 8.O.1 )

Odd

parity

7

7

7

8-bit character

8-bit character

Start
bit

0

1

2

3

4

5

6

Stop
bit

8-bit character

10-bit character frame

( 8.N.1 )

Start
bit

0

1

2

3

4

5

6

Even

parity

Stop
bit

12-bit character frame

( 8.E.2 )

Start

bit

0

1

2

3

4

5

6

Stop
bit

12-bit character frame

( 8.O.2 )

Odd

parity

7

7

7

8-bit character

8-bit character

Stop

bit

Stop
bit

3.

Communication

Protocol

3.1 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)

to

DATA 0

Contents of data:
Nx8-bit data consist of 2n ASCII codes
n<=20, maximum of 40 ASCII codes