IFM Electronic AC402S, Programming Manual

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SmartPLC SafeLine AC4S with fieldbus interfaces
203
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Start-up test
43102
If with activated start-up test in the start state both input signals "ChanA" = TRUE and "ChanB" =
TRUE, the state machine first goes through a state cycle until both input signals simultaneously take
the value FALSE.
State / Description Transition event
ChanA = TRUE UND ChanB = TRUE UND StartupTest = FALSE E_ChanAB_without Startup Test
ChanA = TRUE UND ChanB = TRUE UND StartupTest = TRUE E_ChanAB_with Startup Test
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System events
43016
Following system events start processing of the state machine of the logical device:

Start event after successful initialisation of the state machine (E_Start)
Following system events change the state machine of the logical device to the initialisation state
(S_INIT):

A reset signal generated in the safe application (E_ErrorReset)

AS-i input slaves: Communication and configuration errors (
→
Error codes: Safe AS-i slaves
(
→ S.
267 )

Local inputs/outputs: Configuration and system errors (
→
Error codes: Local I/O interface
(
→ S.
269 )
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Timer events
43011
Timers are started when a state is exited. When the timer has elapsed, a respective event is created.
This timer event is used by the event machine as condition for the transition to the next state. If one or
several timer events occur simultaneously, the event with the highest priority is processed.
The logical devices can evaluate the following times when the safe process signal is generated:
Designation Description Timer event Priority
InvalidTime

Time span within which the signal channels may have an invalid state
without the device changing into the locked error state.

Firmly set
E_InvalTimeout 1
SynchTime

Time span within which the signal channels have to take the same
logical state.

Programmable by programmer
E_SynchTimeout 2
StabilisingTime

Time span within which the states of the signal channels have to be
stable to trigger a state change in the evaluation logic.

Programmable by programmer
E_StabTimeout 3
ToleranceTime

Time span within which the state FALSE is tolerated at one of the two
signal channels without switching-off or changing to the test state.

Programmable by programmer
E_TolTimeout 4