4. FUNCTIONS
MELSEC-A
4-13
Local OD abbreviations
INDEX
Object type
Object dependent data
Name (32
characters)
Data structure (data type INDEX/length)
1
3
14
15
Data type
Data type
Data type
Structured data type
Boolean
Integer16
BitStr
------
(Boolean/1), (Interger16/2),........(Maximum 10 units)
Name (32
characters)
INDEX
Data
length
Number of
elements
Local address
100
101
102
Array variable
Simple variable
Record variable
counter1
counter2
Sensor1
1
3
15
1
2
---
16
----
10
Local station/D100
NET10 other station
Local station/X0, local station/D40, ...
Name (32
characters)
Data
length
Local address
103
104
Domain
Domain
mainP
12288
1024
Name
(32
characters)
INDEX
500 PI
program 1
103
The client uses either the object name registered in the local OD or the index No. (INDEX) uniquely
assigned to each object to specify the object to be accessed. For the above example where a simple
variable is accessed, either the access No. = 101 or the variable name = counter2 is specified.
