Csos Glossary - Bosch Rexroth IndraControl S20 Manual

DOK-CONTRL-S20*SSDO*8*-AP02-EN-P
IndraControl S20 Module With Safe Digital Outputs S20-SSDO-8/3
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CSos glossary

CIP Safety (Common Industrial
Protocol Safety)
Consumer
Diagnostic coverage (DC)
Dynamization
Expected Packet Interval (EPI)
FMEA (Failure Mode and Effects
Analysis)
Format type
Functional safety
Category
Mean time to failure (MTTFd)
This safe protocol is used for the safe data transfer in the Sercos bus.
CRC Cyclic Redundancy Check = CRC check value
The validity of the process data in the safety telegram is checked using a
CRC check value. The assigned address books are checked and the safety-
relevant parameters are also backed up. This value is part of the safety tele‐
gram.
CSos "CSos" is the abbreviation for "CIP safety on sercos", which is the safe chan‐
nel in Sercos.
Device receiving safe data
The effectiveness of the diagnostics is determined as ratio between the fail‐
ure rate of the identified hazardous failures and the total failure rate of all
hazardous failures.
Note 1: The diagnostic coverage can either apply to the complete system or
to components of the safety-related systems. A diagnostics coverage could
for example be available for sensors and/or the logic system and/or correct‐
ing elements.
Note 2: Following IEC 61508-4:2010, term 3.8.6.
The dynamization is intended to identify error states in the safety-relevant cir‐
cuitries. It is automatically dynamized in the background without affecting the
safety function or the default drive functions.
Generation rate of cyclic messages.
Errors State of a unit characterized by the inability to perform a requested function,
excluding the inability during preventive maintenance or other planned ac‐
tions or due to lack of external resources (IEC 60050-191:1990, 05-01).
Note 1: An error is often caused when the unit itself fails, but it can also be
present without previous failure.
Note 2: In this part of the ISO 13849, "Error" means accidental error.
FMEA is an analytic method of the preventive quality assurance. It is used to
find potential vulnerabilities and to detect their relevance and evaluate them
and to introduce measures for their avoidance or detection on time. The sys‐
tematic analysis and recovery of vulnerabilities minimizes the risk, reduces
the error costs and improves the reliability.
CIP telegram format (base format, extended format).
Part of the overall safety relating to the EUC and EUC control system which
depends on the correct functioning of the safety-related system E/E/PE sys‐
tem and other risk reducing measures (IEC 61508-4:2010, 3.1.12).
EUC: Installation, machine, apparatus or system used for manufacturing, ma‐
terial deformation,
61508-4:2010, 3.2.1).
EUC control system: System responding to the input signals of the process
and/or an operator and generating output signals allowing the EUC to work
as intended (IEC 61508-4:2010, 3.3.3).
Classification of safety-related control parts with regard to their resistance to
an error and their subsequent error response that can be reached due to the
structural allocation of the parts, their error detection and/or their reliability
(EN ISO 13849-1).
Expectation value of the mean time up to the hazardous failure.
transportation, medical
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CSos glossary
or other activities (IEC