Realization phase
Operation phase

The realization phase is characterized by selection of the technology and architecture, definition of the proof test interval, the design and installation of the SIS, as well as commissioning.

Siemens provides the F-block library in S7 F System and the SIMATIC Safety Matrix for configuration and programming of the S7-400FH controllers.

The S7 F System engineering tool supports configuration by means of function for comparison of safety-related F-programs, recognition of changes in the F-program using the check-sum, and for separation of safety-related and standard functions.

Access to the F-functions can be password-protected. The F-block library integrated in S7 F Systems contains predefined function blocks for generation of safety-related applications with the CFC or the SIMATIC Safety Matrix based on it. The certified F-blocks are extremely robust and intercept programming errors such as division by zero or out-of-range values. The diverse programming technique is then used for detecting and reacting to any further errors.

Based on the proven principle of a Cause & Effect matrix, the tool is highly suitable for processes where defined statuses require specific safety reactions.

During the risk analysis of a plant, the configuration engineer can assign exactly defined reactions (effects) to events (causes) which may occur during a process.

The possible events (inputs) are initially entered in the horizontal lines of a matrix table comparable to a spreadsheet program, and then their type and quantity, logic operations, any delays and interlocks as well as any tolerable faults are configured. The reactions (outputs) to a particular event are then defined in the vertical columns.

Advantages in the implementation phase of Safety Matrix:
	Simple programming using Cause & Effect method
	No programming knowledge required
	Automatic generation of CFCs including driver blocks
	Automatic version tracking
	Integral tracking of changes
	1-to-1 printout of Cause & Effect matrix

Operation phase

The viewer of the SIMATIC Safety Matrix which can be used on the SIMATIC PCS 7 operator station permits simple and intuitive operation and monitoring of the safety application during runtime. The signal status is displayed online in the Cause & Effect matrix.

Safety Lifecycle management functions for version management and for documentation of operator interventions and program modifications effectively supplement the configuration, operation and maintenance functions of the SIMATIC Safety Matrix and also the safety lifecycle management.

Advantages in the operation phase of Safety Matrix:
	Complete integration in SIMATIC PCS 7
	First-in alarm display and saving
	Integral operating functions such as bypass, reset, and override and parameter modification
	Sequence of event display and savings
	Automatic saving of operator interventions for the safety lifecycle management
	Automatic version tracking
	Automatic documentation of modifications

The application of Safety Matrix is one
of the benefits from the integration of SIMATIC Safety Integrated into SIMATIC PCS 7. Our Safety Matrix features an innovative configuration tool implementing safety logic based upon
a cause & effects matrix.

Specification of the safety program is simply completed by entering input
parameters for the safety matrix.