232 Rockwell Automation Publication 1766-UM001O-EN-P - September 2021
Appendix F MicroLogix 1400 Distributed Network Protocol
DNP3 Analog Output Object
The supported object group and variations are listed in this section. The
controller responds with the default group and variation when the DNP3
Master requests to read an object with Any variation.
Analog Output Status Objects:
• g40v0 – Analog Output Status – Any Variations
• g40v1 – Analog Output Status – 32-bit with flag (default)
• g40v2 – Analog Output Status – 16-bit with flag (default)
• g40v3 – Analog Output Status – Single-prec flt-pt with flag (default)
Analog Output Command Objects:
• g41v1 – Analog Output – 32-bit
• g41v2 – Analog Output – 16-bit
• g41v3 – Analog Output – Single-prec flt-pt
Related Object File Number:
• 16-bit Analog Output Object File Number
• 32-bit Analog Output Object File Number
• Short Floating Point Analog Output Object File Number
Related Configuration File Number:
– None
To generate Analog Output Object from the DNP3 Subsystem in the controller,
you should configure the Analog Output Object File Number in the DNP3 Slave
Application Layer Configuration file.
When only one of the Analog Output Object File is configured, Index number
starts from 0 for the configured object. 1 word is used for 1 Index of 16-bit
Analog Output Object, 1 double word is used for 1 Index of 32-bit Analog
Output Object, and 1 short float is used for 1 Index of Short Floating Point
Analog Output Object.
If the 16-bit Analog Output Object File Number, 32-bit Analog Output Object
File Number, and Short Floating Point Analog Output Object File Number are
configured in the DNP3 Slave Application Layer Configuration file, the
starting index number of 16-bit Analog Output Object is 0 and the starting
index number of 32-bit Analog Output Object starts from the last index
number of 16-bit Analog Output Object.
For example, if 10 elements of 16-bit Analog Output Object are configured, 10
elements of 32-bit Analog Output Object, and 10 elements of Short Floating
Point Analog Output Object are configured, the index numbers are:
• 16-bit Analog Output Object: From 0…9
• 32-bit Analog Output Object: From 10…19
• Short Floating Point Analog Output Object: From 20…29
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