PC Control / Profi Control 645-12M Instruction Manual pdf - Kuhnke

Table of contents
4.8. Addressing............................................... 4-42
4.8.1. Address mnemonics ............................................................. 4-42
4.8.2. Offset addressing ................................................................ 4-43
4.8.2.1. External operands used as offset ........................................ 4-43
4.8.3. Types of addressing: summary .............................................. 4-44
4.9. PC Control 645-12M on PROFIBUS ............ 4-45
4.9.1. Data consistency secured by OS_CRIT ................................... 4-46
4.9.2. Controlling and monitoring DP slaves ..................................... 4-48
4.9.2.1. Available services ............................................................. 4-48
4.9.2.2. Functional principle of KUBES module DP_CTRL ................... 4-49
4.9.2.3. Requesting a service ......................................................... 4-50
4.9.2.3.1. Choosing a station and group ......................................... 4-51
4.9.2.3.2. Program example: read diagnostic data ........................... 4-52
4.9.2.4. Service 7: activate/deactivate DP slave ............................... 4-53
4.9.2.5. Service 5: freeze/unfreeze DP slave inputs .......................... 4-54
4.9.2.6. Service 6: synchronise DP slave outputs .............................. 4-55
4.9.2.7. Service 8: change user parameters of DP slave .................... 4-56
4.9.2.8. Service 9: read DP slave's diagnostic information ................. 4-57
4.9.2.9. Overall program example .................................................. 4-58
4.10. PLC error and failure handling ............................................... 4-69
4.10.1. Failures and errors summary ............................................... 4-69
4.10.2. Undervoltage (supply, failure no. 2) ..................................... 4-71
4.10.2.1. Without external supply .................................................. 4-71
4.10.2.2. With external supply ....................................................... 4-71
4.10.3. Watchdog (program runtime exceeded, failure #3) ............... 4-73
4.10.4. Checksum in user program (failure #8) ................................ 4-74
4.10.5. Hierarchy error (failure #9) ................................................. 4-75
A. Specifications ................................................ A-1
A.1. Technical specifications ............................................................. A-1
A.2. Order specifications ................................................................. A-3
A.3. References to literature .............................................................. A-3
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