Communication Data Frame - Delta Electronics AC Motor Drive VFD-EL User Manual

For RTU:
( 8.N.2 )
Start
bit
( 8.E.1 )
Start
bit
( 8.O.1 )
Start
bit
( 8.N.1 )
Start
bit
( 8.E.2 )
Start
bit
( 8.O.2 )
Start
bit
3. Communication Protocol

3.1 Communication Data Frame:

ASCII mode:
Revision August 2008, 2ELE, V1.02
0 1 2
8-bit character
11-bit character frame
0 1 2
8-bit character
11-bit character frame
0 1 2
8-bit character
11-bit character frame
0 1 2 3
8-bit character
10-bit character frame
0 1 2 3
8-bit character
12-bit character frame
0 1 2 3
8-bit character
12-bit character frame
STX Start character ':' (3AH)
Address Hi Communication address:
8-bit address consists of 2 ASCII codes
Address Lo
Function Hi Command code:
8-bit command consists of 2 ASCII codes
Function Lo
DATA (n-1) Contents of data:
to Nx8-bit data consist of 2n ASCII codes
DATA 0 n<=20, maximum of 40 ASCII codes
3 4 5 6
3 4 5 6
5
3 4 6
4 5 6
4 5 6
5
4 6
Chapter 4 Parameters|
Stop Stop
7
bit bit
Even
Stop
7
parity
bit
Odd
Stop
7
parity
bit
Stop
7
bit
Stop
Even Stop
7
parity bit
bit
Stop
Odd Stop
7
bit
parity bit
4-87