Hi,
Could you please advise how to send an SDO message (ref. attached picture) in CODESYS?
What libraries should be used?
I would appreciate if you give me a sample of a program.
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I have a problem with SDOs too. I am using the canopen manager library and the function CanopenSendSDO with no results.
The call of the function i am using is
CanOpenSendSDOread
(Enable:=ton.Q,(Rising trig each 2s)
wDrvNr:=0,(one master, the PLC)
ucNodeId:=5,(Id of the node)
wIndex:=16#6411,(Index of the node)
bySubIndex:=00,(Subindex. I am trying to read the number of subindexes of this node)
ucModus:=16#40,(read mode)
ucAnswerBytes=>ar(and here is where we expect the answer, where ar is an array of 8 bytes))
I can see with a sniffer the SDOs are in the bus but I don´t receive any answer
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
Hi,
Could you please advise how to send an SDO message (ref. attached picture) in CODESYS?
What libraries should be used?
I would appreciate if you give me a sample of a program.
I have a problem with SDOs too. I am using the canopen manager library and the function CanopenSendSDO with no results.
The call of the function i am using is
CanOpenSendSDOread
(Enable:=ton.Q,(Rising trig each 2s)
wDrvNr:=0,(one master, the PLC)
ucNodeId:=5,(Id of the node)
wIndex:=16#6411,(Index of the node)
bySubIndex:=00,(Subindex. I am trying to read the number of subindexes of this node)
ucModus:=16#40,(read mode)
ucAnswerBytes=>ar(and here is where we expect the answer, where ar is an array of 8 bytes))
I can see with a sniffer the SDOs are in the bus but I don´t receive any answer