Programming Actions and Conditions
S7-GRAPH for S7 300/400 Programming Sequential Control Systems
7-22 C79000-G7076-C526-01
FBD Element Address Data type Memory
Area
Description
IN2:
Second
comparison
value
INT / DINT /
REAL
I, Q, M, D, L,
constant
Note:
When you enter the comparator
you only need to specify the data
type D/R/I explicitly when you enter
the 32 bit values without specifying
a type (for example when
accessing absolute addresses in
the double word area). Otherwise
the data type is detected by the
system so that the specification can
be omitted.
Assignment
<Address>
=
<address> BOOL I, Q, M, D, L You use output operations only in
the permanent instructions of a
sequencer.
The address contains the result of
the conditions that were
programmed within the permanent
instructions (logic operations before
the output box). It specifies the bit
to which the signal state is
assigned.
Set output
<Address>
S
<address> BOOL I, Q, M, D, L This instruction is executed only
when the RLO of the previous
permanent instruction is "1". The
<address> is then set to "1".
An RLO of "0" has no effect, so the
current signal state of the address
is not changed.
The address specifies which bit will
be set.
Reset output
<Address>
R
<address> BOOL,
TIMER,
COUNTER
I, Q, M, T,
C, D, L
This instruction is executed only
when the RLO of the previous
permanent instruction is "1". The
<address> is then reset to "0".
An RLO of "0" has no effect, so the
current signal state of the address
is not changed.
The address specifies which bit will
be reset.
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