GE 345

1–12 345 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE
RS485 INTERFACE CHAPTER 1: COMMUNICATIONS GUIDE
NOTE
NOTE:
1. A default variation refers to the variation response when variation 0 is requested and/
or in class 0, 1, 2, or 3 scans. The default variations for object types 1, 2, 20, 21, 22, 23,
30, and 32 are selected via relay settings. This optimizes the class 0 poll data size.
2. For static (non-change-event) objects, qualifiers 17 or 28 are only responded when a
request is sent with qualifiers 17 or 28, respectively. Otherwise, static object requests
sent with qualifiers 00, 01, 06, 07, or 08, will be responded with qualifiers 00 or 01 (for
changeevent objects, qualifiers 17 or 28 are always responded.)
3. Cold restarts are implemented the same as warm restarts – the 345 is not restarted,
but the DNP process is restarted.
2 (write) 00, 01 (start-stop)
07, 08 (limited
quantity) 17, 28
(index)
--- ---
50 1 Time and Date (default -
see Note 1)
1 (read)2
(write)
00, 01 (start-stop)
06 (no range, or all)
07 (limited qty=1) 08
(limited quantity)
17, 28 (index)
129
(response)
00, 01
(start-stop)
17, 28
(index) (see
Note 2)
52 2 Time Delay Fine
(quantity = 1)
129
(response)
07 (limited quantity) --- ---
60 0 Class 0, 1, 2, and 3 Data 1 (read) 20
(enable
unsol) 21
(disable
unsol) 22
(assign
class)
06 (no range, or all) --- ---
1 Class 0 Data 1 (read) 22
(assign
class)
06 (no range, or all) --- ---
2 Class 1 Data 1 (read) 20
(enable
unsol)
06 (no range, or all)
07, 08 (limited
quantity)
--- ---
3 Class 2 Data 21 (disable
unsol)
--- ---
4 Class 3 Data 22 (assign
class)
--- ---
80 1 Internal Indications 1 (read) 00, 01 (start-stop)
(index =7)
129
(response)
00, 01
(start-stop)
2 (write) (see
Note 3)
00 (start-stop)
(index =7)
--- ---
No Object (function
code only) see Note 3
13 (cold
restart)
--- --- ---
No Object (function
code only)
14 (warm
restart)
--- --- ---
No Object (function
code only)
23 (delay
meas.)
--- --- ---
OBJECT REQUEST RESPONSE
OBJECT
NO.
VARIATION
NO.
DESCRIPTION FUNCTION
CODES
(DEC)
QUALIFIER CODES
(HEX)
FUNCTION
CODES
(DEC)
QUALIFIER
CODES
(HEX)