Technical data

Table Of Contents
Events
System Software for S7-300/400 System and Standard Functions - Volume 2/2
A5E00739858-01
34-13
34.8 Event Class 7 - H/F Events
Event ID Event OB
W#16#72A2 Failure of a DP master or a DP master system OB 70
W#16#72A3 Redundancy restored on the DP slave OB 70
W#16#7301 Loss of redundancy (1 of 2) due to failure of a CPU OB 72
W#16#7302 Loss of redundancy (1 of 2) due to STOP on the standby
triggered by user
OB 72
W#16#7303 H system (1 of 2) changed to redundant mode OB 72
W#16#7323 Discrepancy found in operating system data OB 72
W#16#7331 Standby-master switchover due to master failure OB 72
W#16#7333 Standby-master switchover due to system modification during
runtime
OB 72
W#16#7334 Standby-master switchover due to communication error at the
synchronization module
OB 72
W#16#7340 Synchronization error in user program due to elapsed wait
time
OB 72
W#16#7341 Synchronization error in user program due to waiting at different
synchronization points
OB 72
W#16#7342 Synchronization error in operating system due to waiting at
different synchronization points
OB 72
W#16#7343 Synchronization error in operating system due to elapsed wait
time
OB 72
W#16#7344 Synchronization error in operating system due to incorrect data OB 72
W#16#734A The "Re-enable" job triggered by SFC 90 "H_CTRL" was
executed.
OB 72
W#16#73A3 Loss of redundancy on the DP slave OB 70
W#16#73D8 Safety mode disabled
W#16#73E0/72E0 Loss of redundancy in communication/ problem eliminated OB 73
W#16#7520 Error in RAM comparison OB 72
W#16#7521 Error in comparison of process image output value OB 72
W#16#7522 Error in comparison of memory bits, timers, or counters OB 72
W#16#73C1 Update process canceled OB 72
W#16#73C2 Updating aborted due to monitoring time being exceeded during
the n-th attempt (1
n max. possible number of update
attempts after abort due to excessive monitoring time)
OB 72
W#16#75D1 Safety program: Internal CPU error
W#16#75D2 Safety program error: Cycle time time-out
W#16#75D6 Data corrupted in safety program prior to the output to F I/O
W#16#75D7 Data corrupted in safety program prior to the output to partner F
CPU
W#16#75D9 Invalid REAL number in a DB
W#16#75DA Safety program: Error in safety data format
W#16#73DB/72DB Safety program: safety mode enabled/disabled
W#16#75DC Runtime group, internal protocol error
W#16#75DD/74DD Safety program: Shutdown of a fail-save runtime group
enabled/disabled
W#16#75DE/74DE Safety program: Shutdown of the F program enabled/disabled -