Siemens Simatic S7-300 CPU 31xC Series Installation And Operating Instructions Manual page 12

Table of contents
Table 5-2 Installation tools and materials................................................................................................... 5-3
Table 5-3 Mounting holes for rails .............................................................................................................. 5-5
Table 5-4 Slot numbers for S7 modules..................................................................................................... 5-9
Table 6-1 Wiring accessories ..................................................................................................................... 6-1
Table 6-2 Tools and material for wiring ...................................................................................................... 6-1
Table 6-3 Wiring conditions for PS and CPU ............................................................................................. 6-2
Table 6-4 Wiring conditions for front connectors........................................................................................ 6-2
Table 6-5 Assignment of front connectors to modules............................................................................... 6-7
Table 6-6 Wiring front connectors .............................................................................................................. 6-9
Table 6-7 Inserting the front connector .................................................................................................... 6-10
Table 6-8 Labeling strip assignment to modules...................................................................................... 6-11
Table 6-9 Shielding diameter assignment to shielding terminals............................................................. 6-12
Table 7-1 Integrated I/Os of CPU 312C ..................................................................................................... 7-6
Table 7-2 Integrated I/Os of CPU 313C ..................................................................................................... 7-6
Table 7-3 Integrated I/Os of CPU 313C-2 PtP/DP ..................................................................................... 7-7
Table 7-4 Integrated I/Os of CPU 314C-2 PtP/DP ..................................................................................... 7-7
Table 8-1 Recommended commissioning procedure: Hardware............................................................... 8-2
Table 8-2 Recommended commissioning procedure - Part II: Software ................................................... 8-4
Table 8-3 Possible reasons of a CPU request to reset memory................................................................ 8-9
Table 8-4 Procedure for CPU memory reset............................................................................................ 8-10
Table 8-5 Internal CPU events on memory reset..................................................................................... 8-11
Table 8-6 Software requirements ............................................................................................................. 8-23
Table 8-7 DP address areas of the CPUs................................................................................................ 8-23
Table 8-8 Event recognition by CPUs 31x-2 DP/31xC-2 DP operating as DP master ............................ 8-25
Table 8-9 Event recognition by CPUs 31x-2 DP/31xC-2 DP as DP slave ............................................... 8-28
Table 8-10 Configuration example for the address areas of transfer memory........................................... 8-30
Table 8-11 PROFINET IO address areas of the CPUs.............................................................................. 8-35
Table 8-12 CPU startup for operation as IO controller............................................................................... 8-39
Table 8-13 Event detection by the CPU 31x-2 PN/DP operating as IO controller ..................................... 8-39
Table 9-1 Firmware backup to MMC .......................................................................................................... 9-2
Table 9-2 Updating the firmware from MMC .............................................................................................. 9-3
Table 10-1 The differences between forcing and modifying variables....................................................... 10-4
Table 10-2 Status and error displays ....................................................................................................... 10-10
Table 10-3 Evaluation of the SF LED (software error) ............................................................................. 10-11
Table 10-4 Evaluation of the SF LED (Hardware error) ........................................................................... 10-13
Table 10-5 BUSF, BUSF1 and BUSF2 LEDs .......................................................................................... 10-14
Table 10-6 BUSF LED is lit ...................................................................................................................... 10-14
Table 10-7 BUSF LED flashes ................................................................................................................. 10-15
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S7-300, CPU 31xC and CPU 31x: Installation
Operating Instructions, Edition 08/2004, A5E00105492-05