Siemens Simatic RTU303xC Series Operating Instructions Manual page 12

Table of contents
5 Program blocks .................................................................................................................................... 249
5.1 Block overview ..................................................................................................................... 249
5.2 Parameter assignment of the blocks.................................................................................... 251
5.3 Often used parameters ........................................................................................................ 252
5.4 Blocks for logical functions ................................................................................................... 255
5.4.1 Logical AND ......................................................................................................................... 255
5.4.2 Logical OR ........................................................................................................................... 256
5.4.3 Exclusive OR (XOR) ............................................................................................................ 257
5.4.4 Logical NOT ......................................................................................................................... 258
5.5 Blocks for basic types of calculation .................................................................................... 259
5.5.1 Addition ................................................................................................................................ 259
5.5.2 Subtraction ........................................................................................................................... 259
5.5.3 Multiplication ........................................................................................................................ 260
5.5.4 Division ................................................................................................................................. 261
5.6 Blocks for time functions ...................................................................................................... 262
5.6.1 On delay ............................................................................................................................... 262
5.6.2 Off delay ............................................................................................................................... 263
5.6.3 On / Off delay ....................................................................................................................... 265
5.6.4 Retentive on delay ............................................................................................................... 266
5.6.5 Pulse generator .................................................................................................................... 268
5.6.6 Random on/off delay ............................................................................................................ 268
5.6.7 Pulse sequence.................................................................................................................... 269
5.6.8 Year timer ............................................................................................................................. 273
5.6.9 Week timer ........................................................................................................................... 276
5.6.10 Astronomical clock ............................................................................................................... 277
5.7 Blocks for analog value functions ........................................................................................ 279
5.7.1 Triggered saving .................................................................................................................. 279
5.7.2 Analog value monitoring ...................................................................................................... 280
5.7.3 Limit value switch ................................................................................................................. 281
5.7.4 Difference limit switch .......................................................................................................... 284
5.7.5 Range monitoring ................................................................................................................. 287
5.7.6 Analog value comparator ..................................................................................................... 289
5.7.7 Min. /Max. /Mean value ........................................................................................................ 290
5.7.8 Analog value processing ...................................................................................................... 292
5.7.9 GPS position (RTU3031C) ................................................................................................... 293
5.7.10 Statistics ............................................................................................................................... 295
5.8 Counter and summation blocks ........................................................................................... 298
5.8.1 Counters ............................................................................................................................... 298
5.8.2 Elapsed time counter ........................................................................................................... 300
5.8.3 Frequency calculation .......................................................................................................... 302
5.8.4 Flow calculation.................................................................................................................... 303
5.8.5 Flow totalizer ........................................................................................................................ 304
5.8.6 Flow calculation rectangular weir ......................................................................................... 306
5.8.7 Silo volume calculation ........................................................................................................ 309
5.9 Blocks for messages ............................................................................................................ 311
5.9.1 Sending SMS messages ...................................................................................................... 311
5.9.2 Send e-mail .......................................................................................................................... 312
5.9.3 FTP file transfer.................................................................................................................... 313
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Operating Instructions, 06/2019, C79000-G8976-C382-06
RTU303xC