Technical data
9.1 Technical data for fail-safe operation
Fail-safe operation of the Mobile Panel 277F IWLAN
110
Function Manual, 08/2008, 6AV6691-1FQ01-2AB0
Other safety-related values
Acknowledgment time
1)
40 ms
Maximum reaction time of the HMI device in faultless state
1)
25 ms
Discrepancy times
•
Emergency stop
•
Enabling button position "Enable"
•
Enabling button position "Panic"
•
500 ms
•
2 sec
•
1 sec
Runtime of the F-FBs
The runtime of the F-FBs required in the safety program
depends on the F-CPU used. The values are provided as
FAQs concerning Mobile Panel 277F IWLAN at the
following Internet address:
"
http://www.siemens.com/automation/support
1)
The times specified refer to the internal reaction times of the HMI device, e.g. the time expiring between actuation
of an emergency stop and the transfer of this signal to PROFINET.
Quantity structure for the effective range concept
F FBs required in safety program
F_FB_MP
1x per Mobile Panel 277F IWLAN, maximum 126
F_FB_RNG_4
1x per effective range, for which up to 4 HMI devices have
logging on authorization
F_FB_RNG_16
1x per effective range, for which up to 16 HMI devices have
logging on authorization
DB_STATES
1
Configuring
Maximum number of transponders used in the project for
effective ranges
127
Maximum number of effective ranges in the project
127
Maximum number of transponders per effective range
127
Maximum number of HMI devices with logging on
authorization per effective range
•
When using F_FB_RNG_4: 4 HMI devices
•
When using F_FB_RNG_16: 16 HMI devices
Maximum configurable distance between transponder and
HMI device
8 m
Calculating the total reaction time
Use the Excel spreadsheet "s7fcotia" to calculate the total reaction time.
This table is provided with the S7 Distributed Safety options package. The current version of
this table is available at the following Internet address:
"
http://www.siemens.com/automation/support
", subscription ID 21627074.
See also
Application and ambient conditions (Page 42)
