Fail-Safe Blocks
Fail-Safe Systems
8-142 A5E00085588-03
Block
Name
Block
Number
Function Maximum Run
Time with
Dynamically
Connected Inputs
in
V
F_CH_DO FB 378 • F channel driver for digital output 44
F_CH_AI FB 379 • F channel driver for analog input 130
Further Blocks (in Alphabetical Order)
F_1oo2_R FB 457 1 out of 2 analog voter block (block type) 5900
F_2OUT3 FB 305 Binary selection 2 out of 3 16
F_2oo3_R FB 456 2 out of 3 analog voter block (block type) 7650
F_ABS_R FB 325 Calculation of the absolute value 12
F_ADD_R FB 321 Addition of two REAL values 16
F_AND4 FB 301 AND logic operation on four inputs 13
F_AVEX_R FB 331 Mean value of a maximum of nine REAL values 98
F_BO_FBO FC 303 Convert from BOOL to F_BOOL 10
F_CTUD FB 341 Up and down counter 28
F_CYC_CO FB 395 F cycle time monitoring 280
F_DIV_R FB 324 Division of two REAL values 18
F_F_TRIG FB 347 Detection of the falling edge 13
F_FBO_BO FC 363 Convert from F_BOOL to BOOL 9
F_FI_I FC 305 Convert from F_INT to INT 9
F_FR_FI FB 461 Convert from F_REAL to F_INT 13
F_FR_R FC 304 Convert from F_REAL to REAL 10
F_FTI_TI FC 306 Convert from F_TIME to TIME 10
F_I_FI FB 369 Converts from INT to F_INT 11
F_LIM_HL FB 314
Monitoring of upper limit value violation of a REAL value
24
F_LIM_I FB 350 Asymmetrical limiter of INT values 21
F_LIM_LL FB 315
Monitoring of lower limit violation of a REAL value
24
F_LIM_R FB 329 Asymmetrical limiter of REAL values 40
F_LIM_TI FB 345 Asymmetrical limiter of TIME values 26
F_MAX3_R FB 326 Maximum of three REAL values 18
F_MID3_R FB 327 Medium of three REAL values 21
F_MIN3_R FB 328 Minimum of three REAL values 18
F_MUL_R FB 323 Multiplication of two REAL values 18
F_MUX2_R FB 332 Multiplexer 1 out of 2 for REAL values 17
F_NOT FB 304 NOT logic operation 11
F_OR4 FB 302 OR logic operation on four inputs 15
F_PLK FB 396
Program execution monitoring before output blocks
To be supplied
F_PLK_O FB 397
Program execution monitoring after output blocks
To be supplied
F_QUITES FB 367 Fail-safe acknowledgment via the ES/OS 24
F_R_BO FB 391 Fail-safe receipt of 10 data items of the data type
F_BOOL from another F run-time group
44
F_R_FR FB 362 Convert from REAL to F_REAL 11
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