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DPI/Off, DPI/On
Double-point information (DPI) is set using the menu as follows:
DPI/Off: The frame is transmitted when the DPI/Sig.No. signal is OFF.
DPI/On: The frame is transmitted when the DPI/Sig.No. signal is ON.
Note: If selecting “-”(=don’t care), the frame is not transmitted even though the
DPI/Sig.No. signal set change to the set status. In general, the frames related
to tripping such as “Time-tagged message” and Time-tagged measurand”, etc.,
which are not an object of GI (General Interrogation), are not transmitted
when the DPI changes “On” to “Off”. In this case, set the “DPI/Off” to “-”(=don’t
care).
Note: When selecting “DP” for both “DPI/Off” and “DPI/On”, the DPI number is
transmitted as the number (=0/1/2/3) using the same information number
(INF). Regarding the frame related to a device control, the “undefined/failed”
status may be required in addition to the “close/open” status for the extension.
When selecting “DP”, “undefined(00)/close(01)/open(10)/failed(11)” status is
applied in the same information number (INF).
COT
Cause of Transmission (COT) of the frame is set. Not only one COT but also two or more
COT can be selected each No. (frame). COT setting pattern and COT supplemented the
frame are as follows:
(1) If two or all of COT=1, 11 and 12 are checked per No., each frame of the No. become
the following conditions.
Table 11.4-7 COT
COT=12
(remote operation)
T
R
[ms] after receiving any command of the IEC 60870-5-103
1
T
L
[ms] after Key operation on the relay front panel
1
Conditions except above COT=11 and 12
The relay is in test mode
2
, the COT=1(Spontaneous) is shifted to 7(Test mode)
1
Note: TR and TL are set in Common setting.
2
Note: Settings of the test mode is described later.
(2) If one of COT is specified per No., the frame is always supplemented with the
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