Siemens Simatic S7 Series System Manual

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

Siemens Simatic S7 Series Specifications

General

CPU	Varies by model (e.g., S7-300, S7-400, S7-1200, S7-1500)
Communication Interfaces	PROFIBUS, PROFINET, Ethernet, MPI
Programming	TIA Portal, STEP 7
Programming Languages	LAD, FBD, STL, SCL, GRAPH
I/O Modules	Digital, Analog, Specialty modules available
Operating Temperature	0°C to 60°C (standard models)
Mounting	DIN rail mounting
Operating Voltage	24V DC or 120/230V AC (varies by model)
Protection Class	IP20 (standard models)
Memory	Varies depending on the S7 model. Includes work memory (RAM) for program execution, load memory (EEPROM or Flash) for program storage, and system memory for operating system functions. Memory sizes range from kilobytes to megabytes.