Rockwell Automation Publication 2080-UM002M-EN-E - April 2022 113
Chapter 6 Micro870 Controller Distributed Network Protocol
When these values are configured properly according to the supported data
files, the controller responds with a Group 87, Variation 1 object filled with the
value in the data file. Table 9 on page 113
shows the supported data files for the
Point Addressing.
When the Descriptor Code is selected as PTYP, the Point Addressing
parameters for the Descriptor element are replaced by 10 Point Addressing
parameters. These should be configured in the same order of the DAEL
elements in the relevant Prototypes.
For instance, if Prototype 0 includes a Namespace at Index 3 and Name at
Index 4, then the first DAEL in the Prototype 0 is at Index 5.
Table 9 - Point Address Type — Standard DNP3 Point
Point Address
Type
Data Type
Code
Maximum
Data Length
(bytes)
Point Type Point Index Low Byte Point Index High Byte
Standard
DNP3 Point
NONE = 0 0
NONE = 0:
No point type is
associated.
0
NONE = 0
UINT = 2
INT = 3
OSTR = 5
BSTR = 6
TIME = 7
0
0, 1, 2, or 4
0, 1, 2, or 4
0…255
0…255
0…6
BI = 1:
Binary input
0…4095 max
When the Data Types other than OSTR and BSTR
are used, the Point Index must be set to a point
offset that is divisible by 16.
B2I = 3:
Double-bit input
0…2047 max
When the Data Types other than OSTR and BSTR
are used, the Point Index must be set to a point
offset that is divisible by 8.
CI = 20:
Counter
0…511 max
AI = 30:
Analog input
0…767 max
BCD = 101:
BCD point
0…255 max
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