PLC SIEMENS
PRESENTATION OF THE VARIOUS SYSTEMS
This chapter serves as a presentation to the most important system
Industrial communication
HMI (Human Machine Interface
SIMATIC Industry software
THE SIMATIC PLC- CONTROLLER
SIMATIC S7-200
The SIMATIC S7-200 is the CPU for the lower level performance range.It is available in various grades
The CPU is qualified for open and closed loop control tasks in machines and system construction.
It is real time capable and offers extensive communication possibilities over a PROFIBUS or PC/PPI cable and over a free programmable interface protocol
The SIMATIC S7-200 offers modular extensibility and integrated PID closed loop control functions
The program software STEP 7 Micro/Win enables a quick introduction in the programming and configuration
.SIMATIC S7-300
The SIMATIC S7-300 family offers the automation solutions for the lower and middle performance range
Properties of the SIMATICS7-300
Program memory up to 85 K instructions
Up to 1024 digital in- and outputs
Multipoint capable interface for the configuration of smaller networks and for configuration with help of a PC/PG.
Quick execution time in which the performance capable CPU executes 1024 binary instructions inside of 0.1 ms.
Modular configuration and quick enhancements are possible through interface modules with an integrated back plane bus.
Modular extensibility through an extensive program module of digital, analog, simulation and function modules to communications and other types of modules.
Integrated functions: counters, positioning, closed loop control, and frequency measuring by the CPUs 312/314 IFM.
Integrated PROFIBUS interface by the 300 2-DP Series. CPU also usable as a slave.
Processing of extensive mathematical formulas.
Preparation of cyclic HMI service integrated into the operating system of the CPU.
Quick and simple configuration and programming with help from STEP 7.
Extensive diagnostic possibilities with help from STEP 7. Error message buffer with time stamp and module diagnostic help the user during error searching.
