Rockwell Automation Allen-Bradley Micro820 User Manual

100 Rockwell Automation Publication 2080-UM002M-EN-E - April 2022
Chapter 6 Micro870 Controller Distributed Network Protocol
DNP3 Slave Application
Layer
This section covers DNP3 Slave Application Layer Function Codes and Internal
Indications. All of the Function Codes that are supported in the controller are
summarized in Function Codes for DNP3 in Micro870 Controllers
on page 126.
For details of Packet Formats for the request and response, see the DNP3
Protocol specifications.
Function Codes
CONFIRM (FC Byte = 0x00)
00 – Confirm
A DNP3 master sends a message with this function code to confirm receipt of a
response fragment. In a general environment, the controller receives a
response with this function code. But the controller may generate a response
with this function code when a DNP3 Master sends a request with the CON bit
set in the application control header.
READ (FC Byte = 0x01)
01 – Read
The READ function code is used by a DNP3 master to request data from the
controller.
43
16-bit Analog Output Command Change Object 2 - 16-bit without time
0 - All variation
1 - 32-bit without time
3 - 32-bit with time
4 - 16-bit with time
5 - Single-precision, floating-point without time
6 - Double-precision, floating-point without time
7 - Single-precision, floating-point with time
8 - Double-precision, floating-point with time
32-bit Analog Output Command Change Object 1 - 32-bit without time
0 - All variation
2 - 16-bit without time
3 - 32-bit with time
4 - 16-bit with time
5 - Single-precision, floating-point without time
6 - Double-precision, floating-point without time
7 - Single-precision, floating-point with time
8 - Double-precision, floating-point with time
Short Float Analog Output Command Change Object 5 - Single-precision, floating-point without time
0 - All variation
1 - 32-bit without time
2 - 16-bit without time
3 - 32-bit with time
4 - 16-bit with time
6 - Double-precision, floating-point without time
7 - Single-precision, floating-point with time
8 - Double-precision, floating-point with time
Table 7 - DNP3 Default Variation Configuration File (Continued)
Group Default Variation for the following Objects Standard Default Variation Alternate Default Variations

Rockwell Automation Allen-Bradley Micro820 Specifications

General

Brand	Rockwell Automation
Model	Allen-Bradley Micro820
Category	Controller
Language	English