Siemens industrial software is divided into three different categories:
(1) Programming and Engineering Tools Programming and Engineering Tools include all the tools needed for PLC, PC-based control of programming, configuration, simulation and maintenance. STEP 7 Standard Package SIMATIC S7 is a project management tool for programming and maintaining the configuration of PC-based control products for S7-300 / 400, C7 PLCs and SIMATIC WinAC with STEP 7-Micro / WIN operating on a Windows platform S7 -200 series PLC programming, online simulation software.
(2) PC-based control software PC-based control system WinAC allows the use of a personal computer as a programmable logic controller (PLC) to run user programs running on a SIMATIC IPC with Windows NT 4.0 operating system installed or any other commercially available machine. WinAC offers two PLCs, one is a software PLC that runs as a Windows task on the user’s computer. The other is a slot PLC (a PC card installed on the user’s computer) which has the full functionality of a hardware PLC. WinAC is fully compatible with the SIMATIC S7 family of processors and is programmed with the same SIMATIC programming tools (eg STEP 7) programmed to run on either WinAC or S7 series processors.
(3) Human-machine interface software Human-machine interface software provides human-machine interface (HMI) or SCADA system for user automation projects and supports a wide range of platforms. There are two kinds of human-machine interface software, one is ProTool for machine level and the other is WinCC for monitoring level.
ProTool is suitable for most HMI hardware configurations and can be configured effectively from the operator panel to a standard PC using ProTool integrated in STEP 7. ProTool / lite for text display configuration, such as: OP3, OP7, OP17, TD17 and so on. ProTool / Pro is used to configure standard PCs and all Siemens HMI products. ProTool / Pro is not just a configuration software. Its runtime is also used for the monitoring of Windows platforms.
WinCC is a truly open Supervisory Control and Data Acquisition (SCADA) software for monitoring and data acquisition that runs on any standard PC. Simple to use WinCC, high system reliability and integration with STEP 7 functions, direct access to the PLC’s hardware fault system saves project development time. Its design is suitable for a wide range of applications, can be connected to the existing automation environment, a large number of communication interfaces and comprehensive process information and data processing capabilities, the latest WinCC5.0 support in the office through the IE browser to dynamically monitor production process.

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