S5-115F Manual Error Diagnostics
Table 5-7. Operating System Central Functions
Byte 1* Function of the Program Section
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100 Cold restart after POWER UP
101 Stop program
102 Restart from Stop
103 Cycle control
104 Idle loop
105 10 msec. interrupt service routine
106 PG interrupt service routine
107 SINEC L1 interrupt service routine
108 Process interrupt service routine
109 Interpreter of the STEP 5 operations not running in the SSP
* Byte 1 in error record
Table 5-8. Integrated Standard FBs which Generate 115F Operating System Error Messages
Byte 1* Function of the Program Section
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250 FB250, ANEI for analog input module
251 FB251, ANAU for analog output module
253 FB253, MBXT for mailbox transfer
FB254, SYNC for synchronization of user time update, process/time interrupt
handling and PG/SINEC L1 processing
254
252 FB 252, BLUE for block transfer CP 523
* Byte 1 in error record
EWA 4NEB 811 6149-02
5-13