1–42 345 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE
ETHERNET INTERFACE CHAPTER 1: COMMUNICATIONS GUIDE
DNP implementation Table 16: DNP Implementation
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)
--- ---
2 Binary Output Status 1 (read) 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)
12 1 Control Relay Output
Block
3 (select)4
(operate) 5
(direct op) 6
(dir. op,
noack)
00, 01 (start-stop)
07, 08 (limited
quantity) 17, 28
(index)
129
(response)
echo of
request
20 0 Binary Counter
(Variation 0 is used to
request default
variation)
1 (read) 7
(freeze) 8
(freeze
noack) 9
(freeze clear)
10 (frz. cl.
noack) 22
(assign
class)
00, 01 (start-stop)
06 (no range, or all)
07, 08 (limited
quantity) 17, 28
(index)
--- ---