Assigning Parameters to and Calling the S7-Graph FB
Example: Assignment of the FB for the inching mode
To call and operate the sequencer in the inching mode, you do not require all
addresses. The following diagram shows the addresses that must be assigned
when programming Ladder Logic. The FB was created with the standard parameter
set.
BOOL
EN
BOOL
OFF_SQ
BOOL
INIT_SQ
BOOL
ACK_EF
BOOL
S_PREV
BOOL
S_NEXT
BOOL
SW_AUTO
BOOL
SW_TAP
SW_MAN
BOOL
INT
S_SEL
BOOL
S_ON
BOOL
S_OFF
BOOL
T_PUSH
9.3
Selecting an FB Parameter Set
The parameter set you select depends both on the intended use of the sequencer
and on the available memory in the CPU. The size of the parameter set also
determines the memory requirements for the S7-Graph FB and the corresponding
instance DB.
Your task ...
You want to use your sequencer only in the automatic mode. You
do not require any further control or monitoring functions.
You want to operate your sequencer in various modes. You also
require feedback about the process and have the option of
acknowledging messages.
Apart from the options available with the standard parameter set,
you require further operating and monitoring options for service
and installation. This parameter set applies to blocks up to
version 4.
Apart from the options available with the standard parameter set,
you require further operating and monitoring options for service
and installation. This parameter set applies to version 5 blocks.
9-2
DB Sequencer
FB Sequencer
BOOL
ENO
S_NO
INT
S_MORE
BOOL
S_ACTIVE
BOOL
ERR_FLT
BOOL
AUTO_ON
BOOL
TAP_ON
BOOL
MAN_ON
BOOL
S7-GRAPH for S7 300/400 Programming Sequential Control Systems
>
... then use the
parameter set
>
Minimum
>
Standard
>
Maximum (<= V4)
>
Definable/Maximum
(V5)
C79000-G7076-C526-01
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