ABB SPAC 531 C User Manual And Technical Description page 76

Event codes
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Over the SPA bus a substation level data com-
municator can read event data, such as status
changes, transmitted by the control module
SPTO 6D3. The events are represented, for
instance, by the event codes E1...E11. The
control module transmits its event data in the
format:
<time> <channel number><event code>
where
time = ss.sss (seconds and parts of a second)
channel number = 0...17
event code = E1...E54, depending on the channel
Example 20: Calculation of an event mask value.
Channel Event Event
code
2 E1 Change in status: xx ->10 (open)
2 E2 Change in status: xx ->01 (close)
2 E3 Change in status: xx ->11 (undefined)
2 E4 Change in status: xx ->00 (undefined)
2 E5 OPEN output activated
2 E6 OPEN output reset
2 E7 CLOSE output activated
2 E8 CLOSE output reset
2 E9 Output activation inhibited
2 E10 Failed to open or close
2 E11 Attempt to activate an output
Event mask V155 for channel 2
Most of the event codes and the corresponding
events can be included in or excluded from the
event reporting by writing an event mask
(V155...V158) to the control module. The
event mask is a binary number coded to a
decimal number. Each channel (0...17) has its
own event mask.
Each event code is represented by a number. An
event mask is formed by multiplying the corre-
sponding number by either 1, which means that
event is included in the reporting, or 0, which
means that event is not included in the reporting
and, finally, adding up the results of the multi-
plications.
Number
repre-
senting
the event
1
2
4
8
16
32
64
128
256
512
1024
Event Result
factor of multi-
plication
x 1 = 1
x 1 = 2
x 0 = 0
x 1 = 8
x 1 = 16
x 0 = 0
x 1 = 64
x 0 = 0
x 1 = 256
x 0 = 0
x 0 = 0
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