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In addition to the spontaneous data transfer the
SPA bus allows reading of all input values (I-
values), setting values (S-values), information
recorded in the memory (V-values), and some
other data. Further, part of the data can be
altered by commands given over the SPA bus.
All the data are available in channel 0.
R = data to be read from the unit
W = data to be written to the unit
(P) = writing enabled by password
Data
Code
Data
Values
direction
INPUTS
Current on phase L1
I1
R
0...63 x I
n
Current on phase L2
I2
R
0...63 x I
n
Current on phase L3
I3
R
0...63 x I
n
Neutral current
I4
R
0...21 x I
n
Blocking or control signal
I5
R
0 = no blocking
1 = external blocking or
control signal active
OUTPUTS
Starting of stage I>
O1
R
0 = I> stage not started
1 = I> stage started
Operation of stage I>
O2
R
0 = I> stage not tripped
1 = I> stage tripped
Starting of stage I>>
O3
R
0 = I>> stage not started
1 = I>> stage started
Operation of stage I>>
O4
R
0 = I>> stage not tripped
1 = I>> stage tripped
Starting of stage I
0
>
O5
R
0 = I
0
> stage not started
1 = I
0
> stage started
Operation of stage I
0
>
O6
R
0 = I
0
> stage not tripped
1 = I
0
> stage tripped
Starting of stage I
0
>>
O7
R
0 = I
0
>> stage not started
1 = I
0
>> stage started
Operation of stage I
0
>>
O8
R
0 = I
0
>> stage not tripped
1 = I
0
>> stage tripped
Signal START1 TS1
O9
R, W (P)
0 = signal not active
1 = signal active
Signal START2 SS1
O10
R, W (P)
0 = signal not active
1 = signal active
Signal ALARM1 SS2
O11
R, W (P)
0 = signal not active
1 = signal active
Signal ALARM2 SS3
O12
R, W (P)
0 = signal not active
1 = signal active
Signal TRIP TS2
O13
R, W (P)
0 = signal not active
1 = signal active
Operate output relays
O41
R, W (P)
0 = not operated
1 = operated
Data to be trans-
ferred via the fibre-
optic serial bus
