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ifm
System Manual
ecomat
mobile
PDM360NG (CR1080, CR1081, CR9042) Target V01
2011-07-28
CAN in the PDM360
CAN POUs to CANopen
279
CANOPEN_SDOREAD
7791
= SDO Read
Unit type = function block (FB)
Contained in the library:
ifm_CANopen_NT_Vxxyyzz.LIB
Available for the following devices:
- BasicController: CR040n
- BasicDisplay: CR0451
- PDM360NG: CR108n, CR9042
Symbol in CoDeSys:
Description
7793
CANOPEN_SDOREAD is an easy function block for editing "Expedited SDOs", i.e. SDOs with max.
4 bytes of user data. This type usually represents the bigger part of the SDO communication.
INFO:
Expedited SDO = Expedited Service Data Object
A considerable amount of memory space can be saved due to the limitation of the data volume to
max. 4 bytes of user data, as this FB only needs to reserve 4 bytes as buffer storage and does not
create a large data array itself.
Parameters of the inputs
7794
Parameter
Data type
Description
EXECUTE BOOL
FALSE
TRUE (edge):
POU is executed once
otherwise: POU not active
A POU already started is processed.
CHANNEL
BYTE
CAN interface (1...n) depending on the device
NODE
BYTE
ID of the node
permissible values = 01...7F
16
= 1...127
10
IDX
WORD
index in object directory
SUBIDX
BYTE
subindex in the object directory
Timeout
(optional use of the parameter)
TIME
waiting time of the FB for the response
when the time has elapsed, the FB stops waiting.
value = 0: use value from the configuration
preset = 10 ms