Anybus CompactCom 40 Network Manual page 21

EtherNet/IP Implementation Details
4.3.3 Grouping Data - The Assembly Mapping Object
The assembly mapping object makes it possible to create an arbitrary number of process data
sets, called assembly mappings. Each assembly mapping instance represents a different logical
set of process data, that can be chosen by the network and received over a single connection.
Every instance of the assembly mapping object, as seen below, contains an ADI map, referring to
an arbitrary number of ADIs.
The instance numbers can be set freely.
Assembly Mapping Object (EBh) Instances
Instance #
1
2
10
11
30
51
There are two object instance attributes in the assembly mapping object, called Write PD
Instance List and Read PD Instance List. These two attributes contain references to all read
instances and all write instances, respectively. The example above will automatically generate
the following content in these two attributes.
Name
Write PD Instance List
Read PD Instance List
The attributes Write PD Instance List and Read PD Instance List adopts the view of the network, e.g. an
input will produce data on the network and an output will consume data on the network.
Write PD Instance List will contain all assembly mapping object instances with type "Read". Read PD
Instance List will contain all assembly mapping object instances with type "Write".
Anybus CompactCom 40 EtherNet/IP IIoT Network Guide
Type
Read
Read
Write
Write
Read
Write
Attribute
11
12
ADI Map
1, 2
2, 3
3, 4, 30
4, 5
5, 6
6, 30
Values
10, 11, 51
1, 2, 30
SCM-1202–069 1.9 en-US
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