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\deftab284\paperw15309\paperh16840\margl1134\margt1134\margr3430\margb1338\pard\fi-284\li284\sb60\tx284\tx708\tx1416\tx2124\tx2832\tx3540\tx4248\tx4956\tx5664\tx6372\tx7080\tx7788\tx8496\tx9204\plain\f0\fs18 \'b7\plain\f1\fs18\tab Password protection;\line a password concept also protects the user program from unauthorized access as well as the keyswitch.\par\plain\f0\fs18 \'b7\plain\f1\fs18\tab Diagnostics buffer;\line the last 100 errors and interrupt events are saved in a buffer for diagnostics purposes\par\plain\f0\fs18 \'b7\plain\f1\fs18\tab Maintenance-free data backup;\line the CPUs can hold retentive data without a battery either (NVRAM)\par\pard\sb60\sa20\tx708\tx1416\tx2124\tx2832\tx3540\tx4248\tx4956\tx5664\tx6372\tx7080\tx7788\tx8496\tx9204\tx9912\plain\f1\fs18\b\i\cf3 Configurable attributes\par\pard\sb100\tx708\tx1416\tx2124\tx2832\tx3540\tx4248\tx4956\tx5664\tx6372\tx7080\tx7788\tx8496\tx9204\tx9912\plain\f1\fs18 STEP 7 can be used to parameterize both S7 configurations and the properties and responses of the CPUs:\par\pard\fi-284\li284\sb60\tx284\tx708\tx1416\tx2124\tx2832\tx3540\tx4248\tx4956\tx5664\tx6372\tx7080\tx7788\tx8496\tx9204\plain\f0\fs18 \'b7\plain\f1\fs18\tab Interface with multipoint capability (MPI);\line Definition of node addresses\par\plain\f0\fs18 \'b7\plain\f1\fs18\tab Restart/cycle performance characteristics;\line Determination of the maximum cycle time and load, as well as of the self-testing functions.\par\plain\f0\fs18 \'b7\plain\f1\fs18\tab Retentive areas;\line Definition of the number of retentive bit memories, counters, timers and data blocks\par\plain\f0\fs18 \'b7\plain\f1\fs18\tab Clock bit memory;\line Address settings\par\plain\f0\fs18 \'b7\plain\f1\fs18\tab Protection level;\line Definition of access authorizations to program and data\par\plain\f0\fs18 \'b7\plain\f1\fs18\tab System diagnostics;\line Definition of the handling and scope of diagnostic messages\par\plain\f0\fs18 \'b7\plain\f1\fs18\tab Time interrupts;\line Periodicity settings\par\plain\f0\fs18 \'b7\plain\f1\fs18\tab Time-of-day interrupts;\line Start date, start time and periodicity settings\par\plain\f0\fs18 \'b7\plain\f1\fs18\tab PROFIBUS DP master/slave interface; \line Free address assignment for distributed I/O\par\pard\sb60\sa20\tx708\tx1416\tx2124\tx2832\tx3540\tx4248\tx4956\tx5664\tx6372\tx7080\tx7788\tx8496\tx9204\tx9912\plain\f1\fs18\b\i\cf3 Reporting functions \par\pard\fi-284\li284\sb60\tx284\tx708\tx1416\tx2124\tx2832\tx3540\tx4248\tx4956\tx5664\tx6372\tx7080\tx7788\tx8496\tx9204\plain\f0\fs18 \'b7\plain\f1\fs18\tab Status and fault indicators;\line LEDs indicate events such as hardware, programming, timer, I/O, battery or bus errors/faults and operating statuses such as RUN, STOP, startup.\par\plain\f0\fs18 \'b7\plain\f1\fs18\tab Testing functions;\line You can use the PG to display signal states in program execution, modify process tags irrespective of the user program, and read out the contents of stack memories.\par\plain\f0\fs18 \'b7\plain\f1\fs18\tab Information functions;\line You can use the PG to obtain information about the storage capacity and operating mode of the CPU as well as the current loading of work and load memories, current scan times and diagnostic buffer contents in plain language.\par\pard\sb60\sa20\tx708\tx1416\tx2124\tx2832\tx3540\tx4248\tx4956\tx5664\tx6372\tx7080\tx7788\tx8496\tx9204\tx9912\plain\f1\fs18\b\i\cf3 Integrated communication functions\par\pard\fi-284\li284\sb60\tx284\tx708\tx1416\tx2124\tx2832\tx3540\tx4248\tx4956\tx5664\tx6372\tx7080\tx7788\tx8496\tx9204\plain\f0\fs18 \'b7\plain\f1\fs18\tab PG/OP communication\par\plain\f0\fs18 \'b7\plain\f1\fs18\tab S7 standard communication\par\plain\f0\fs18 \'b7\plain\f1\fs18\tab S7 communication (server only)\par\pard\tx708\tx1416\tx2124\tx2832\tx3540\tx4248\tx4956\tx5664\tx6372\tx7080\tx7788\tx8496\tx9204\tx9912\par }