Yaskawa Sigma-5 User Manual: MECHATROLINK-II Commands Manual do Utilizador Página 10

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1 MECHATROLINK-II Commands
1.1.1 Layers
1-2
1.1 MECHATROLINK-II Communications
1.1.1 Layers
The MECHATROLINK-II communications layers have functions equivalent to layers 1, 2, and 7 in the OSI
(Open System Interconnection) reference model.
This manual describes commands for the application layer.
1.1.2 Frame Structure
A MECHATROLINK-II command is composed of a main command and a subcommand as shown below. It
can also be used only with a main command.
The application layer interfaces with only the information field.
OSI Reference Model and MECHATROLINK-II Model
OSI MECHATROLINK-II
Layer 7: Application layer MECHATROLINK-II application layer
Layers 3 to 6 None
Layer 2: Data link layer MECHATROLINK-II data link layer
Layer 1: Physical layer MECHATROLINK-II physical layer
Classifi-
cation
Byte Command Response
Control
Field
0 03H (Fixed) 01H (Fixed)
Informa-
tion
Field
1 to 16 Used by main command.
17 to 31
Used by subcommands. The subcommands for servo drives use only 17th to 29th byte. Therefore,
only 17th to 29th byte are described in this manual.
Note: In some main commands, subcommand cannot be used.
Control
field
Main command area Subcommand area
3029171610Byte 31
Information field
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