234 Rockwell Automation Publication 1766-UM001O-EN-P - September 2021
Appendix F MicroLogix 1400 Distributed Network Protocol
When a Small BCD Object File is configured, the Index number starts from 0. 1
word is used for 1 Index of Small BCD Object.
As an example, a Small BCD Object File is configured as shown below. Data File
N21 has 10 elements. Index 0 of the Small BCD Object is N21:0, Index 1 is N21:1
and Index 9 is N21:9.
As an example, a Small BCD Config File is configured as shown below. The file
has 10 elements. B40:0/0 and B40:0/1 can be configured for Class Level 0, 1, 2,
or 3 for DNP3 Index 0 of the Small BCD Object File. B40:1/0 and B40:1/1 can be
configured for Class Level for DNP3 Index 1 of the Small BCD Object File.
Default Class Level is 0. Any other bits are reserved.
In the example below, for Small BCD Config File, Class Level of Index 0 is
1(B40:0/0 and B40:0/1), Class Level of Index 1 is 2(B40:1/0 and B40:1/1), Class
Level of Index 2 is 3(B40:2/0 and B40:2/1), and Class Level of other Indexes
are 0.
DNP3 Data-Set Object
This feature is supported only in MicroLogix 1400 Series B and Series C
controllers.
These object groups and variations are supported.
Data-Set Objects:
• g85v0 – Data-Set Prototype – Any Variation
• g85v1 – Data-Set Prototype – With UUID
• g86v1 – Data-Set Descriptor – Data-Set contents
• g86v2 – Data-Set Descriptor – Characteristics
• g87v0 – Static Data-Set – Any Variation
• g87v1 – Static Data-Set – Present value
• g88v0 – Event Data-Set – Any Variation
• g88v1 – Event Data-Set – Snapshot
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