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Mode RTU :
Chaque donnée de 8 bits est la combinaison de deux caractères hexadécimaux de 4 bits.
Par exemple, 64 Hex.
2. Format des données
Pour ASCII :
( 7.N.2)
Start
bit
( 7.E.1)
Start
bit
( 7.O.1)
Start
bit
( 7.N.1)
Start
bit
( 7.E.2)
Start
bit
( 7.O. 2)
Start
bit
ADV20, V1.02
0
1
2
3
7-bit character
10-bit character frame
0
1
2
3
7-bit character
10-bit character frame
0
1
2
3
7-bit character
10-bit character frame
0
1
2
3
7-b it c har acter
9- bit c har acter fra me
0
3
1
2
7-bi t char ac ter
11 -bit char acter fr ame
0
1
2
3
7-b it c har acter
11-bit c harac ter fr ame
Stop
4
5
6
bit
Even
4
5
6
parity
Odd
4
5
6
parity
Stop
4
5
6
bit
Even
4
5
6
parity
Odd
4
5
6
parity
Chapitre 4 Paramètres
Stop
bit
Stop
bit
Stop
bit
Stop
Stop
bit
bit
S top
S top
bi t
bi t
4-85
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