IFM CR0452 - Page 95

95
ifm Programming Manual BasicDisplay CR0452 v03.02 05 / 2018
ifm function elements ifm function elements for the device CR0452
CANOPEN_READOBJECTDICT
7933
= Read object directory
Unit type = function block (FB)
Unit is contained in the library ifm_CANopen_NT_Vxxyyzz.LIB
Symbol in CODESYS:
>
Description
7935
CANOPEN_READOBJECTDICT reads up to 4 bytes of configuration data from the object directory of
the device for use in the application program.
>
Parameters of the inputs
7936
Parameter
Data type
Description
EXECUTE
BOOL := FALSE
FALSE  TRUE (edge):
execute function element once
otherwise: function element is not active
A function element already started is processed.
CHANNEL
BYTE
CAN interface (1...n) depending on the device
IDX
WORD
index in object directory
SUBIDX
BYTE
sub-index referred to the index in the object directory
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Parameters of the outputs
7937
Parameter
Data type
Description
DATA
DWORD
parameter value
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
8
08
function block not yet executed
40
28
object directory entry is invalid
242
F2
Error: setting is not possible