Windows Logic Controller (WinLC RTX)

The Windows Logic Controller handles the actual control task and execution of the control program. It coordinates the associated input and output of process values via the lower-level PROFINET or PROFIBUS fieldbus system and makes the process values available for visualization and data processing tasks.

Several processing levels are available for optimum process control:

• Cyclic program processing
• Interrupt processing
• Time and date-controlled processing
• Isochronous processing level with PROFIBUS or PROFINET.

Retentivity

WinAC RTX saves all data that has been declared as retentive on the hard disk upon exiting. An uninterruptible power supply (e.g. SITOP DC UPS) can be used to ensure a defined termination of the WinAC Software PLC even in the case of an unexpected drop in the PC power supply.

Alternatively, storage of retentive data on the integral, battery-backed SRAM memory of the SIMATIC PC (for example, SIMATIC IPC427D or SIMATIC HMI IPC) can also be selected so that up to 128 KB of data can be stored retentively on voltage failure. For operation on SIMATIC S7-mEC, EC31, as much as 512 KB of retentive data can be stored on the integral, non-volatile memory. A UPS is not necessary in this case. It is, however, recommended that a UPS is used when supplementary applications such as visualization or data processing demand saving of the current data in the event of voltage failure.

OPC server

The SIMATIC NET OPC server supplied with WinAC provides open access to all process values. Visualization systems or data processing systems can be linked to WinAC via this interface.

Interface to visualization

SIMATIC WinAC RTX is easy to use with the SIMATIC HMI systems SIMATIC WinCC flexible or SIMATIC WinCC.

Visualization systems from third-party suppliers can be connected via the included SIMATIC NET OPC server.

Communication

The programming of the Windows Logic Controller with STEP 7 and also the visualization with SIMATIC HMI can be implemented both locally in the same PC and remotely using the standard SIMATIC networks Industrial Ethernet/PROFINET or PROFIBUS.

WinAC RTX can exchange data with WinAC stations or with S7 controllers over these networks. WinAC RTX supports Open User Communication over the PROFINET interface, which permits communication with any peers via the open protocols TCP, UDP, and now also ISOonTCP. In addition, access to the WinAC web server is also supported via this interface.

A SOFTNET S7 Lean license is included for communication over Industrial Ethernet by means of the integral Ethernet interfaces of the SIMATIC IPC.