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RS485 INTERFACE
DNP implementation
OBJECT
OBJECT
NO.
1
2
10
1–8
DNP 3.0 Device Profile
Explanation of 'Sometimes': It will be disabled for
RS-485 applications, since there is no collision
avoidance mechanism. For Ethernet communication
it will be available and it can be disabled or enabled
with the proper function code.
Default Counter Object/Variation:
□ No Counters Reported
□ Configurable (attach explanation)
⊠ Default Object: 20
Default Variation: 1
⊠ Point-by-point list attached
Sends Multi-Fragment Responses:
⊠ Yes
□ No
Table 1: DNP Implementation
VARIATION
DESCRIPTION
NO.
0
Binary Input (Variation 0
is used to request
default variation)
1
Binary Input
2
Binary Input with Status 1 (read) 22
0
Binary Input Change
(Variation 0 is used to
request default
variation)
1
Binary Input Change
without Time
2
Binary Input Change
with Time
3
Binary Input Change
with Relative Time
0
Binary Output Status
(Variation 0 is used to
request default
variation)
CHAPTER 1: COMMUNICATIONS GUIDE
Counters Roll Over at:
□ No Counters Reported
□ Configurable (attach explanation)
⊠ 16 Bits
□ Other Value: _____
⊠ Point-by-point list attached
REQUEST
FUNCTION
QUALIFIER CODES
CODES
(HEX)
(DEC)
1 (read) 22
00, 01 (start-stop)
(assign
06 (no range, or all)
class)
07, 08 (limited
quantity)
(index)
1 (read) 22
00, 01 (start-stop)
(assign
06 (no range, or all)
class)
07, 08 (limited
quantity) 17, 28
(index)
00, 01 (start-stop)
(assign
06 (no range, or all)
class)
07, 08 (limited
quantity) 17, 28
(index)
1 (read)
06 (no range, or all)
07, 08 (limited
quantity)
1 (read)
06 (no range, or all)
07, 08 (limited
quantity)
1 (read)
06 (no range, or all)
07, 08 (limited
quantity)
1 (read)
06 (no range, or all)
07, 08 (limited
quantity)
1 (read)
00, 01(start-stop)
06 (no range, or all)
07, 08 (limited
quantity) 17, 28
(index)
345 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE
RESPONSE
FUNCTION
QUALIFIER
CODES
CODES
(DEC)
(HEX)
---
---
17, 28
129
00, 01
(response)
(start-stop)
17, 28
(index) (see
Note 2)
129
00, 01
(response)
(start-stop)
17, 28
(index) (see
Note 2)
---
---
129
17, 28
(response)
(index)
130 (unsol.
resp.)
129
17, 28
(response)
(index)
130 (unsol.
resp.)
---
---
---
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