7. COMMUNICATION THAT DO NOT REQUIRE
THE SEQUENCE PROGRAM
MELSEC-A
7-9
7.1.6
Object attribute acquisition (GetOD: Server)
A “GetOD” service is issued from the client to acquire the object attributes defined in AJ71PB96F/
A1SJ71PB96F. In PROFIBUS-FMS the object attributes are registered in the OD (Object Dictionary).
One object attribute data is called an OD entry.
This service is also use to learn the PI (Program Invocation) status.
[Parameters required by the client]
•
All Attributes
This specifies the acquisition format of the object attributes to be acquired.
All Attributes value
Meaning
False = 0
Acquisition of specific attributes (minimum required)
True = FF (hex)
Acquisition of all attribute
Point
The following attributes cannot be acquired when "All Attributes = False" is specified. To acquire
these attributes specify "True."
•
Password
•
Access Groups
•
Access Rights
•
Local Address
•
Name
•
Local Address-OD-ODES
•
Local Address-ST-OD
•
Local Address-S-OD
•
Local Address-DV-OD
•
Local Address-DP-OD
•
Extension
•
Access Specification
Specify the required specific values for the following cases.
Access Specification
Setting value
Index
Index of the OD entry to be acquired.
Variable Name
Name of the variable object to be acquired.
Domain Name
Name of the domain object to be acquired.
PI Name
Name of the PI object to be acquired.
Start Index
Index of the object for which acquisition will begin.
