IFM BasicController CR0431, Programming Manual

Page: 144 / 228

144
ifm Programming Manual BasicController relay CR0431 v03.03.00 05 / 2018
ifm function elements ifm function elements for the device CR0431
J1939_RX
7724
Unit type = function block (FB)
Unit is contained in the library ifm_J1939_NT_Vxxyyzz.LIB
Symbol in CODESYS:
>
Description
7725
J1939_RX is the easiest method for receiving single frame messages. The message read last on the
CAN bus is returned.
>
Parameters of the inputs
7726
Parameter Data type Description
ENABLE BOOL TRUE: execute this function element
FALSE: unit is not executed
> Function block inputs are not active
> Function block outputs are not specified
CHANNEL BYTE CAN interface (1...n) depending on the device
PGN DWORD PGN = Parameter Group Number
permissible = 0...262 143 = 0x00000000...0x0003FFFF
The PGN = 0 is not used.
>
Parameters of the outputs
7727
Parameter Data type Description
SA BYTE Source address of the transmitter
PRIO BYTE message priority (0…7)
LEN WORD number of the bytes received (0...8)
DATA ARRAY [0..7] OF BYTE received data, (1...8 bytes)
RESULT BYTE feedback of the function block
(possible messages → following table)
Possible results for RESULT:
Value
dec | hex
Description
0 00 FB is inactive
1 01 function block execution completed without error
5 05 FB is active
– no data received yet
9 09 CAN is not active
242 F2 Error: setting is not possible