Check Lists
Fail-Safe Systems
A-8 A5E00085588-03
Block
Name
Block
Number
Function Check
F_LIM_I FB 350 Asymmetrical limiter of INT values
F_LIM_LL FB 315
Monitoring of lower limit violation of a REAL
value
F_LIM_R FB 329 Asymmetrical limiter of REAL values
F_LIM_TI FB 345 Asymmetrical limiter of TIME values
F_MAX3_R FB 326 Maximum of three REAL values
F_MID3_R FB 327 Medium of three REAL values
F_MIN3_R FB 328 Minimum of three REAL values
F_MUL_R FB 323 Multiplication of two REAL values
F_MUX2_R FB 332 Multiplexer 1 out of 2 for REAL values
F_NOT FB 304 NOT logic operation
F_OR4 FB 302 OR logic operation on four inputs
F_PLK FB 396
Program execution monitoring before output
blocks
F_PLK_O FB 397
Program execution monitoring after output
blocks
F_QUITES FB 367 Fail-safe acknowledgment via the ES/OS
F_R_BO FB 391 Fail-safe receipt of 10 data items of the data
type F_BOOL from another F-run-time group
F_R_FR FB 362 Convert from REAL to F_REAL
F_R_R FB 393 Fail-safe receipt of 5 data items of the data
type F_REAL from another F-run-time group
F_R_TRIG FB 346 Detection of the rising edge
F_RCVBO FB 371 Receives F_BOOL data from another CPU
F_RCVR FB 373 Receives F_REAL data from another CPU
F_RS_FF FB 307 RS flipflop, resetting dominant
F_S_BO FB 390 Fail-safe transmission of 10 data items of the
data type F_BOOL to another F-run-time
group.
F_S_R FB 392 Fail-safe transmission of 5 data items of the
data type F_ to another F-run-time group
F_SENDBO FB 370 Sends F_BOOL data to another CPU
F_SENDR FB 372 Sends F_REAL data to another CPU
F_SHUTDN* FB 458 F-run-time group shutdown and restart
management
F_SMP_AV FB 333 Sliding mean value
F_SQRT FB 330 Calculation of the square root
F_SR_FF FB 308 SR flipflop, setting dominant
F_START FB 394 Startup detection (cold restart or warm restart)
F_SUB_R FB 322 Subtraction of two REAL values
F_TEST FB 398 Self-test for commands not backed up by
diversity
F_TESTC FB 399 Control block for the background self-test of
the CPU
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