Siemens Simatic S7 Series User Manual

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EM 253 Position Module Position control describes a range of applications that involve
movement with varying degrees of precision. The
EM 253
Position module is a simple but powerful positioning module
that enables the user to control position systems from micro-
steppers to intelligent servo drives (with integrated closed-loop
control).
SF/DIAG
EM 253
Position
253-1AA22-0XA0
MF
MG
PWR
P0
P1
DIS
CLR
STP
RPS
ZP
LMT
- +
S7-200 PLC with EM 253 Position Module
EM 253 Features Features of the module include:
• Provides high-speed control with a range from 20 to
200,000 pulse per second
• Supports both S curve or linear acceleration and
deceleration
• Provides a configurable measuring system that allows
you to enter data as engineering units (such as inches or
centimeters) or as a number of pulses
• Provides configurable backlash compensation
• Supports absolute, relative, and manual methods of
position control
• Provides continuous operation
• Provides up to 25 motion profiles with up to 4 speed
changes per profile
• Provides four different reference-point seek modes with
a choice of the starting seek direction and final approach
direction for each sequence
• Provides removable field wiring connectors for easy
installation and removal
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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.