Lenze PLC Designer ApplicationTemplate (PLC Designer R3-x) - Manual (Page 89)

Lenze · ApplicationTemplate · 1.3 EN - 04/2013
89
Architecture: The ApplicationTemplate in detail
Displaying the states of the state machine - FB L_EATP_SMAccess
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9.6 Displaying the states of the state machine - FB L_EATP_SMAccess
The Statemachine FUP method serves to display the current state of the state machine from a
module application (MAP).  L_EATP_SMAccess ( 126)
• In the ApplicationTemplate, every machine module features one module application for which
an instance of this block with the SMAccess instance name is created.
• The Statemachine FUP method calls the instance of the L_EATP_SMAccess(SMAccess) block.
9.7 Stater machine: Query examples
This section shows (by the use of program examples) how...
• ...to access the state machine.
• ...to query the states.
Objective/call Example
Querying the current state
• IF condition
• Module's intrinsic/subordinated
module status enquiry by method
IF baseChannelGetActualState (MM_Address:= ) =
L_EATP_SMStates.Manual THEN
// Do something if Statemachine is in state MANUAL
END_IF
• IF condition
• Query the module's intrinsic
status
IF StateMachine.xActStateIsAutomatic THEN
// Do something if Statemachine is in state AUTOMATIC
END_IF
• CASE instruction
• Module's intrinsic/subordinated
module status enquiry by method
CASE baseChannelGetActualState (MM_Address:= ) OF
L_EATP_SMStates.Ready:
// Do something if Statemachine is in state READY
;
L_EATP_SMStates.Service:
// Do something else if Statemachine is in state SERVICE
L_EATP_SMStates.Quickstop:
// Do something else if Statemachine is in state
QUICKSTOP
;
END_CASE
Querying an active warning
• IF condition
• Query the module's intrinsic
warning
IF StateMachine.xWarning THEN
// Do something if warning is active
ELSE
// Do something else if warning is not active
END_IF
Querying the setpoint state of the master
• IF condition
• Based on signals with eSetState
signal
IF StateMachine.xActStateIsAutomatic THEN
IF StateMachine.eSetState = L_EATP_SMStates.Ready
THEN
// Do something if actual state is AUTOMATIC and set
state to READY
;
END_IF
END_IF
Enabling state transition from "Init" to "Ready" (initialisation completed)
SMEnableIitToReady (xValue := TRUE);