SIEMENS PLC family with state of the art technology is known for its Performance, Ruggedness , Precision and Durability. SIEMENS has a wide range of PLCs offers a great flexibility to choose from, based on each application. S7-200 and S7-1200 are meant for small to medium range of applications upto 242 input / outputs. S7- 200 PLCs are meant for standalone applications and can be extended to Profibus/ethernet applications with add on modules. S7-1200 PLCs are meant for Standalone and Ethernet applications without any add ons. S7-200 and 1200 systems are inbuilt with High speed Counters , PID Controllers , Modbus Protocol and supported by function modules such as Positioning module. They are supported by wide range of HMIs such as TD 200 , TD 400 , KP 300 , KTP 400 , KTP 600 etc. S7-300 Family is meant for Medium and large applications upto 1024 input / outputs supported by Distributed systems such as ET200s and ET 200M and distributed systems can be extended upto 10,000 input / outputs. S7- 300 Systems are supported by HMIs such as KTP and TP range of Touch panels. S7-400 family and S7-1500 are meant for High end applications beyond 1024 input / Outputs and for Hot Redundant Systems. These systems are also supported by a wide range of HMIs and each system has wide variety of HMIs to choose from based on the applications.+ Read More