This function will return details about the last switch notification event received.
To get the ID of the sender related to the event, please call rfbcWaitEvent before this function.
Note: many switches will send a notification with channel ID "0" when rebooted/powered on.
Input:
None.
Output:
ch : SINT
The channel on the switch which has been changed.
If the channel is "0" (zero), then it is a wake-up event notifying about the fact that the switch has been without power.
state : BOOL
TRUE/ON
|
-
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On notification.
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FALSE/OFF
|
-
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Off notification.
|
Returns: INT
0
|
-
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Ok. Event cleared.
|
-1
|
-
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Interface is not open (see rfbcOpen).
|
-4
|
-
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RF communication is not available.
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-5
|
-
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Event is not present.
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Declaration:
FUNCTION rfbcSwitchEventReceive : INT;
VAR_INPUT
ch : ACCESS SINT;
state : ACCESS BOOL;
END_VAR;
Example:
INCLUDE rtcu.inc
FUNCTION GetSwitchEvent;
VAR_INPUT
id : DINT;
END_VAR;
VAR
ch : SINT;
state : BOOL;
END_VAR;
rfbcSwitchEventReceive(ch := ch, state := state);
IF ch = 0 THEN
DebugFmt(message := "Switch \4 is powered on.", v4 := id);
ELSIF state THEN
DebugFmt(message := "Channel \1 on switch \4 is powered on.", v4 := id, v1 := ch);
ELSE
DebugFmt(message := "Channel \1 on switch \4 is powered off.", v4 := id, v1 := ch);
END_IF;
END_FUNCTION;
THREAD_BLOCK rfbcMonitor;
VAR
event : INT := 0;
hisId : DINT;
broadcast : BOOL;
END_VAR;
WHILE event <> -1 DO
event := rfbcWaitEvent(timeout := -1, id := hisId, broadcast := broadcast);
CASE event OF
...
6 : GetSwitchEvent(id := hisId);
...
ELSE
DebugFmt(message := "rfbcWaitEvent - event=\1", v1 := event);
END_CASE;
END_WHILE;
END_THREAD_BLOCK;
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