Preface
6
7SA522 Manual
C53000-G1176-C155-3
Besides these, graphical symbols are used according to IEC 60 617-12 and IEC 60
617-13 or symbols derived from these standards. Some of the most frequently used
are listed below:
â–
external binary output signal with number (device indication)
used as input signal
Example of a parameter switch designated FUNCTION with
the address 1234 and the possible settings ON and OFF
Input signal of an analogue quantity
OR gate
AND gate
Exclusive–OR gate (antivalence): output is active, if only
one of the inputs is active
Equivalence: output is active, if both inputs are active or in-
active at the same time
Dynamic inputs (edge–triggered) above with positive, below
with negative edge
Formation of one analogue output signal from a number of
analogue input signals
Limit stage with setting address and parameter designator
(name)
Timer (pickup delay T, example adjustable) with setting
address and parameter designator (name)
Timer (dropout delay T, example non-adjustable)
Dynamic triggered pulse timer T (monoflop)
Static memory (RS-flipflop) with setting input (S), resetting
input (R), output (Q) and inverted output (Q
)
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