Siemens Simatic S7 Series

Open loop motion control
12.8 Axis of Motion example programs
S7-200 SMART
System Manual, 09/2015, A5E03822230-AC
533
LAD/FBD
Description
STL
Network 8
When the State Machine
enters Step 2, it executes a
move of the selected profile.
Symbol and Address:
1
• Always_On = SM0.0
• AXIS0_RUN = SBR4
• Axis_Run_Error =
VB940
• CPU_Input1 = I0.1
• Current_Position =
VD914
• Current_Profile = VB941
• Current_Speed = VD948
• Current_Step = VB942
• Move_Complete = M1.2
• Profile_Number =
VB228
• State_Machine_Step =
VB1500
LD Always_On
= L60.0
LDB=
State_Machine_
Step, 2
EU
= L63.7
LD L60.0
CALL AXIS0_RUN,
L63.7,
Profile_Number,
CPU_Input1,
Move_Complete,
Axis_Run_Error,
Current_Profile,
Current_Step,
Cur-
rent_Position,
Current_Speed
Network 9
When the State Machine is
in Step 2 and completes the
move, you evaluate the
error status. If there is no
error, the State Machine
transitions to Step 3. If there
is an error, the State Ma-
chine transitions to Step 4
for error handling.
Symbol and Address:
1
• Axis_Run_Error =
VB940
• CPU_Output4 = Q0.4
• Move_Complete = M1.2
• State_Machine_Step =
VB1500
LDB=
State_Machine_
Step, 2
A Move_Complete
LPS
AB=
Axis_Run_Error,
0
S CPU_Output4, 1
R T33, 1
MOVB 3,
State_Machine_
Step
LPP
AB<>
Axis_Run_Error,
0
MOVB 4,
State_Machine_
Step