Siemens SIMATIC S7-1200 안전 프로그래밍 매뉴얼 - 페이지 20
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3 Methods for Safety Programming
3.2
Block information and comments
General
In SIMATIC Safety, the Function Block Diagram (FBD) and Ladder Diagram (LAD)
programming languages are available to you. Both languages provide the option to
store block and network comments.
Comments have no influence on the signature of F-FBs/F-FCs and can therefore
also be edited after acceptance.
Recommendation
In the block comment of your block, enter formal information about the block with
the aid of the following template.
If you implement diagnostic functions relevant to the PL / SILCL of another
subsystem (Detect or Evaluate) in an F-FB, include normative parameters such as
PL / SILCL and category (according to ISO 13849-1), DC measures, CCF
measures, etc. in the block comment.
After successful acceptance of the block, also include the signature in the block
comment. This makes it easier to track functional changes of the block.
//============================================================================
// Company
//----------------------------------------------------------------------------
// Library: (that the source is dedicated to)
// Tested with: (test system with FW version)
// Engineering: TIA Portal (SW version)
// Restrictions: (OB types, etc.)
// Requirements: (hardware, technological package, memory needed, etc.)
// Functionality: (that is implemented in the block)
//----------------------------------------------------------------------------
// Reference to Safety Requirement Specification:
// Safety related information: (SIL/PL (Cat.), DC, methods against CFF for connected
subsystems)
//----------------------------------------------------------------------------
// Change log table:
// Version
// 01.00.00
//============================================================================
Safety Programming Guideline
Entry ID: 109750255,
V1.0,
Date
Signature
(dd.mm.yyyy)
(Block CRC)
10/2017
Expert in charge
Changes applied
(Name of expert)
First released version
20