IFM Electronic CR0403 Programming Manual page 76

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ifm function elements
>
CAN_RX_ENH_FIFO
= CAN RX enhanced with FiFo
Unit type = function block (FB)
Unit is contained in the library ifm_RawCAN_NT_Vxxyyzz.LIB
Symbol in CODESYS:
>
Description
In addition, CAN_RX_ENH_FIFO provides a FiFo for the received data (as opposed to
(→ page 74)). Thus several CAN messages can be received in one cycle.
No overwriting takes place when the FiFo is full. Inbound messages will be lost.
In this event:
► Deactivate and reactive the FB via ENABLE.
>
The FiFo is deleted and can be newly filled.
>
Parameters of the inputs
Parameter
ENABLE
CHANNEL
ID
Extended
(optional use of the parameter)
ID_Mask
(optional use of the parameter)
BasicController (CR0403) Runtime System V03.02
Data type
BOOL
BYTE
DWORD
BOOL := FALSE
DWORD := 0
76
ifm function elements for the device CR0403
Description
TRUE: execute this function element
FALSE: unit is not executed
> Function block inputs are not active
> Function block outputs are not specified
CAN interface (1...n) depending on the device
Number of the data object identifier:
normal frame (2 IDs):
11
0...2 047 = 0x0000 0000...0x0000 07FF
Extended Frame (2 IDs):
29
0...536 870 911 = 0x0000 0000...0x1FFF FFFF
TRUE: Extended Frame (ID = 0...2
FALSE: Normal Frame (ID = 0...2
filter mask for the identifier:
if ID_MASK bit = 0, CAN ID bit may be = 0 or 1
if ID_MASK bit = 1, CAN ID bit must be = ID bit
2015-04-01
7615
7616
CAN_RX_ENH
7609
-1)
29
-1)
11