IFM Electronic AC402S - Page 94

SmartPLC SafeLine AC4S with fieldbus interfaces
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The following table shows the meaning of the individual components of the AC4S:
Component
Description
Possible values
T(sensor)
Response time of the safety sensor
→ Operating instructions / data sheet
T(input)
Response time of the safety input device
→ Operating instructions / data sheet
 with local input: 0 ms
T(comin)
Response time of the input communication
channel (as from terminal)
AS-i
30ms
Local IO
16ms
FSoE
32ms + 4*T(MapTask) +
4*T(MainTask)
Safety NetVars
32ms + 4*T(MapTask) +
4*T(MainTask)
T(splc)
Processing time of the fail-safe PLC
2*T(SafetyTask)
T(comout)
Response time of the output communication
channel (up to terminal)
AS-i
15 ms
Local IO
8 ms
FSoE
32ms + 4*T(MapTask) +
4*T(MainTask)
Safety NetVars
32ms + 4*T(MapTask) +
4*T(MainTask)
T(output)
Response time of the output variable unit
→ Operating instructions / data sheet
 with local output: 0 ms
T(actuator)
Reaction time of the actuator
→ Operating instructions / data sheet
The process safety time is extended by 1 PLC cycle if the safe AS-i input slave or the safe
local input channels are configured in CODESYS by means of the following logical devices:
 SF_IN_ASi_dependent_filter_nshutdown (→ S. 230)
 SF_IN_local_dependent_filter_nshutdown (→ S. 260)