Siemens Simatic S7 Series System Manual

Open loop motion control
12.8 Axis of Motion example programs
S7-200 SMART
532 System Manual, 09/2015, A5E03822230-AC
LAD/FBD
Description
STL
Network 4
Start the process. When
CPU_Input0 is toggled from
off to on, the
State_Machine_Step is set
to "1".
Symbol and Address:
1
• CPU_Input0 = I0.0
• State_Machine_Step =
VB1500
LD CPU_Input0
EU
S M0.0, 2
MOVB 1,
State_Machine_
Step
Network 5 This network turns
CPU_Input1 on.
Symbol and Address:
1
• CPU_Input1 = I0.1
LD M0.0
= CPU_Input1
Network 6
When the homing is com-
plete, move to the next
step.
Symbol and Address:
1
• CPU_Output3 = Q0.3
• Homing_Done = M1.1
• Homing_Error = VB930
• State_Machine_Step =
VB1500
LD Homing_Done
AB= Homing_Error
S CPU_Output3
MOVB 2,
State_Machine_
Step
Network 7
When the state machine is
in Step 1, the system auto-
matically homes the axis. If
there is a Homing error, the
Homing_Error output dis-
plays the error code.
Symbol and Address:
1
• Always_On = SM0.0
• AXIS0_RSEEK = SBR5
• Homing_Done = M1.1
• Homing_Error = VB930
• State_Machine_Step =
VB1500
LD Always_On
= L60.0
LDB
State_Machine_
Step, 1
EU
= L63.7
LD L60.0
CALL
AXIS0_RSEEK,
L63.7,
Homing_Done,
Homing_Error

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.