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ifm Programming Manual ecomatmobile BasicController (CR0403) Runtime System V03.02 2015-04-01
ifm function elements ifm function elements for the device CR0403
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CAN_RECOVER
7512
Unit type = function block (FB)
Unit is contained in the library ifm_RawCAN_NT_Vxxyyzz.LIB
Symbol in CODESYS:
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Description
7513
CAN_RECOVER has the following tasks:
• to activate / deactivate the automatic bus off handling
• to restart the CAN interface in case of bus off
> In case of bus off: CAN Controller deletes all buffers (including the buffers of the other protocols).
If CAN_RECOVER is not used (ENABLE=FALSE):
> in case of a bus off a recovery attempt is automatically made after 1 s.
> after 4 failed recovery attempts in a row the affected CAN interface is deactivated.
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Parameters of the inputs
7514
ENABLE BOOL := FALSE TRUE: No automatic recovery after CAN bus off
FALSE: Automatic recovery after CAN bus off
CHANNEL BYTE CAN interface (1...n) depending on the device
RECOVER_EXECUTE BOOL TRUE (only for 1 cycle):
restart of CAN interface
remedy bus off condition
FALSE: function element is not executed
InhibitTime
(optional use of the parameter)
TIME := T#1s Waiting time between bus off and restart of the CAN interface
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