1–8
345 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE
RS485 INTERFACE
CHAPTER 1: COMMUNICATIONS GUIDE
DNP implementation
Table 1: DNP Implementation
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:
Counters Roll Over at:
□
No Counters Reported
□
No Counters Reported
□
Configurable (attach explanation)
□
Configurable (attach explanation)
⊠
Default Object: 20
⊠
16 Bits
Default Variation: 1
⊠
Point-by-point list attached
□
Other Value: _____
⊠
Point-by-point list attached
Sends Multi-Fragment Responses:
⊠
Yes
□
No
DNP 3.0 Device Profile
OBJECT
REQUEST
RESPONSE
OBJECT
NO.
VARIATION
NO.
DESCRIPTION
FUNCTION
CODES
(DEC)
QUALIFIER CODES
(HEX)
FUNCTION
CODES
(DEC)
QUALIFIER
CODES
(HEX)
1
0
Binary Input (Variation 0
is used to request
default variation)
1 (read) 22
(assign
class)
00, 01 (start-stop)
06 (no range, or all)
07, 08 (limited
quantity) 17, 28
(index)
---
---
1
Binary Input
1 (read) 22
(assign
class)
00, 01 (start-stop)
06 (no range, or all)
07, 08 (limited
quantity) 17, 28
(index)
129
(response)
00, 01
(start-stop)
17, 28
(index) (see
Note 2)
2
Binary Input with Status 1 (read) 22
(assign
class)
00, 01 (start-stop)
06 (no range, or all)
07, 08 (limited
quantity) 17, 28
(index)
129
(response)
00, 01
(start-stop)
17, 28
(index) (see
Note 2)
2
0
Binary Input Change
(Variation 0 is used to
request default
variation)
1 (read)
06 (no range, or all)
07, 08 (limited
quantity)
---
---
1
Binary Input Change
without Time
1 (read)
06 (no range, or all)
07, 08 (limited
quantity)
129
(response)
130 (unsol.
resp.)
17, 28
(index)
2
Binary Input Change
with Time
1 (read)
06 (no range, or all)
07, 08 (limited
quantity)
129
(response)
130 (unsol.
resp.)
17, 28
(index)
3
Binary Input Change
with Relative Time
1 (read)
06 (no range, or all)
07, 08 (limited
quantity)
---
---
10
0
Binary Output Status
(Variation 0 is used to
request default
variation)
1 (read)
00, 01(start-stop)
06 (no range, or all)
07, 08 (limited
quantity) 17, 28
(index)
---
---
