Siemens Add 7 AddFEM Manual page 63

Technical Data
Cause for Redundancy Changeover at Module Redundancy
By priority (error weigh-
ting)
Forced reserve specifica-
tion
Module fault
Central unit failure
Channel error
Channel error weighting
Response Times of the Error Recognition for Central Unit Failure
PROFIBUS–DP
Sign of life
Response Times of the Error Recognition for Channel Errors
Analog inputs
Max. delay of the qualifier QU (Bit 0 of the re-
spective analog value AI 1...12) in the input
message
Analog outputs
Max. delay of the qualifier AO 1 ... 8 in the in-
put message
Digital outputs or undervoltage load supply
Max. delay of the qualifier DO 1 ... 16 in the
input message
1)
The error recognition times from the signal evaluation are a multiple of the cycle time due to error
filtering. The error filtering function ensures that disturbing pulses or the unique occurrence of an
error do not cause an error message.
4-12
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(Only 6DL3100–8AB/–8AC)
Cause
–Signal ZRV from the automation processor at failure of
the optical–fiber cable redundancy coupling
–Operating mode switch to STOP
–Memory test of the RAM data range
–Check sum across the program code in the
FEPROM/RAM
–Failure of the supply voltage/undervoltage
–Failure of the PROFIBUS DP
–Failure of the sign of life from the automation processor
–Channel error analog input, analog output, digital output
or failure of the 24 V DC load supply for the digital
outputs
–Sum of the individual channel errors. All channel errors
have the same weighting
At activated response monitoring the monitoring time is
calculated from the corresponding values in the paramete-
rization telegram (refer to the PROFIBUS standard).
2 x automation processor cycle
42.00 ms
12.667 ms
28.667 ms (at 6DL 3100–8AA till
2.00 ms
1)
Version 6)
C79000–G8076–C900–03
AddFEM
AddFEM