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Assigning Parameters to and Calling the S7-Graph FB
9.7.4
Automatic or Switch to next Mode (SW_TOP)
For initial project start up or for testing a control system step-by-step, the
"automatic or step-by-step" mode can be extremely useful:
• The sequencer progresses when the transition is satisfied or when there is an
edge change from 0 to 1 at the parameter T_PUSH.
Input Parameters of the Automatic or Switch to next Mode
Parameters not listed are not mode-dependent.
Parameter
OFF_SQ
INIT_SQ
ACK_EF
S_PREV
S_NEXT
SW_AUTO
SW_MAN
SW_TAP
T_PUSH
Output Parameters of the Automatic or Switch to next Mode
Parameter
S_NO
S_MORE
S_ACTIVE
ERR_FLT
AUTO_ON
TAP_ON
MAN_ON
TOP_ON
9-14
Data
BOOL
All steps are immediately deactivated, in other
words "Sequencer Off"
BOOL
Initialize sequencer, jump to initial step
BOOL
Acknowledgment of a disturbance
BOOL
As for automatic
BOOL
As for automatic
BOOL
Request the automatic mode
BOOL
Request manual mode
BOOL
Request inching mode
BOOL
The transition switches when there is a rising
edge at T_PUSH regardless of whether the
transition is satisfied.
Data
INT
Step number, indicates the selected step
BOOL
Further active steps exist and can be indicated
in S_NO
BOOL
The indicated step is active
BOOL
Error/disturbance occurred
BOOL
The automatic mode is not active
BOOL
Inching mode is not active
BOOL
Manual mode is not active
BOOL
Automatic or switch to next mode is activated
S7-GRAPH for S7 300/400 Programming Sequential Control Systems
Description
Description
C79000-G7076-C526-01
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