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Remote transfer data
(modified 2004-03)
Input data
In addition to the event codes, input data (I
data), output data (O data), setting values (S
data) memorized data (V data), and some other
data can be read from the module over the se-
rial bus. The values of parameters marked with
"W" can be changed over the SPA bus.
When a setting value is to be changed, either
via the push-buttons on the front panel or over
the serial bus, the relay module checks whether
the given parameter value is legal. A value out-
side the permitted setting range will be ignored,
in which case the old setting will be retained.
To change a setting parameter over the serial
bus a password in the range 1- 999 will gener-
ally be needed. The factory setting is 1.
The password is opened by giving the serial com-
munication parameter V160 a numerical value.
The parameter V161 is used for closing the pass-
word. The password is also closed by a power
The parameters I1...I4 can be used for reading
measured values (R) and status data of external
control signals.
Data
Phase-to-phase voltage U
Network frequency
Rate of change of frequency df/dt
External control signals BS1...BS5
supply failure.
The push-buttons of the relay module or a com-
mand given over the serial bus can be used for
changing the password. To be able to change
the password over the serial bus, the password
first has to be opened. The new password is en-
tered using the parameter V161. When the
push-buttons are used for changing the pass-
word, the new password is written over the old
one in subregister 3 of register A.
Should the wrong password be given seven times
in succession, the password turns into zero and
can no longer be opened over the serial bus.
Then it can be given a new value only using the
push-buttons.
R = data to be read from the module
W = data to be written to the module
(P) = writing enabled through a password
12
Parameter
Values
I1
0.00...1.4 x U
I2
20.00...75.00 Hz
I3
-10.0...+10.0 Hz/s
I4
0...31
Variable value explained in
"Recorded information"
n
21
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