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4.3. Assembly Object (0x04)
Class code 0x04.
The Assembly Object binds attributes of multiple objects, which allows data to or from each object to
be sent or received over a single connection. Assembly objects can be used to bind input data or
output data. The terms ”input” and ”output” are defined from the network’s point of view. An input will
produce data on the network and an output will consume data from the network
Class Attributes
Instance Attribute ID Access
Name
Data type
Details
Value
1
Get
Revision
UINT
Revision of this object
2
2 Get Max
Instances
UINT Maximum instance number of an
object currently created in this class
level of the device.
199
3
Get
Number of Instances
UINT
Number of object instances currently
created at this class level of the
device.
13
6
Get
Max ID of class
attributes
UINT
The attribute ID number of the last
class attribute of the class definition
implemented in the device.
7
0
7
Get
Max ID of instance
attribute
UINT
The attribute ID number of the last
instance attribute of the class
definition implemented in the device.
4
Class Service
Service Code
Service Name
Description of Service
0x0E Get_Attribute_Single
Read one attribute
Instance Attribute
Instance
Attribute ID Access
Name
Details
See below
3
Get/Set* Data
Settable Only on Output Assembly.
See below
See below
4
Get
Size
Number of bytes in Attribute 3.
Output Assembly:
Instance Type
Size
Page
20
CIP basic speed control output
2 words (4 bytes)
45
21
CIP extended speed control output
2 words (4 bytes)
46
100
Native drive output
2 to 8 words (4 to 16 bytes)
47
101
Native drive output
4 words (8 bytes)
49
102
Native drive output
6 words (12 bytes)
51
105
TOSHIBA specific output
9 words (18 bytes)
52
Input Assembly:
Instance Type
Size
Page
70
CIP basic speed control input
2 words (4 bytes)
45
71
CIP extended speed control input
2 words (4 bytes)
46
150
Native drive input
2 to 8 words (4 to 16 bytes)
47
151
Native drive input
4 words (8 bytes)
49
152
Native drive input
6 words (12 bytes)
51
155
TOSHIBA specific output
9 words (18 bytes)
52
Instance Services
Service Code
Service Name
Description of Service
0x0E Get_Attribute_Single
Read one attribute
0x10 Set_Attribute_Single
Write one attribute
