Hitachi Relion 670 Series Communication Protocol Manual page 25
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Also See for Relion 670 Series:
- Applications manual (438 pages) ,
- Commissioning manual (284 pages) ,
- Product manual (192 pages)
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1MRK511391-UUS Rev. L
ANSI13000288 V1 EN-US
Figure 3:
The actual DNP3 specification defines 6 variations for the presentation of an analog value:
•
Variation 1 - 32-bit with flag
•
Variation 2 - 16-bit with flag
•
Variation 3 - 32-bit without flag
•
Variation 4 - 16-bit without flag
•
Variation 5 - single-precision floating point with flag
•
Variation 6 - double-precision floating point with flag
The IED supports all 32-bit and floating point variants without any additional scaling configuration. This is
given as long as the MaxSourceVal (as it is given in the IED as floating point) is in the range of a 32-bit
signed integer value (max. 32-bit = 2 147 483 648).
DNP, 670 series
Communication protocol manual
Equation mode
Reg. justification
MMXU
Scaling to
or other
SMAI
DNP3
application
demands
functions
Source values
(Float, 32, 16, 12, 8 bit)
PCM600: typical example of DNP3 scaling
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DNP3
'DEVICE PROFILE'
Analog Input Points
DNP3
Comm.
Interface
DNP3
Destination Values
Register length
ANSI13000288-1-en.vsd
Vendor-specific implementation
DNP3
master
Section 3
19
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