IFM Electronic CR0451 - Page 87

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ifm System Manual ecomatmobile BasicDisplay (CR0451) V01
CAN in the PDM360 CAN-FBs on layer 2 (RAW-CAN)
CAN_RECOVER
7512
Unit type = function block (FB)
Contained in the library: ifm_RawCAN_NT_Vxxyyzz.LIB
Available for the following devices:
- BasicController: CR040n
- BasicDisplay: CR0451
- PDM360NG: CR108n
Symbol in CoDeSys:
CAN_RECOVER
ENABLE
CHANNEL
RECOVER_EXECUTE
InhibitTime
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.
Parameters of the inputs
7514
Parameter Data type Description
ENABLE BOOL 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: this function is not executed
InhibitTime
(optional use of the parameter)
TIME Waiting time between bus off and restart of the CAN interface
preset = 1 s