Lenze Function library CANopenSdoDrv - Manual (Page 17)

DMS 1.0 EN - 07/2011 - TD05
L
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Function library "CANopenSdoDrv"
Function blocks
BlockRead - read CAN index per segmented data transfer
Inputs
Outputs
Identifier/data type Information/possible settings
bExecute
BOOL
FALSEÊTRUE Activates a read request
nAddress
INT
CAN node address
1 ... 63 Parameter channel 1
65 ... 127 Parameter channel 2
nIndex
INT
CAN index
• For converting a code number into the required CAN index, you can use the
L_FUNCodeIndexConv function from the »LenzeDrive.lib« library.
nSubIndex
INT
CAN subindex
tRxTimeout
TIME
TimeOut time
• After the read request has been sent, the FB must receive a response from the
target device within this time. Otherwise, a timeout error will be output.
• If the input is not connected, the timeout time is one second.
nBufferSize
INT
Maximum number of the data bytes that are allowed to be received as a function of
the size of the variables created at the pData.
pData
POINTER
Pointer to the address of the memory area for storing the received data bytes.
• The address of a variable can be determined with the address function ADR.
Identifier/data type Value/meaning
bDone
BOOL
TRUE Request executed successfully
• bDone is set to TRUE for at least one processing cycle.
• bDone will only be reset to FALSE if the bExecute input is set to
FALSE as well.
bBusy
BOOL
TRUE Request in process
nIndexSize
INT
Size of the data type of the read CAN index or number of the received data bytes.
bError
BOOL
TRUE An error has occurred during job execution
• For details see dnErrorNo.
• bError is set to TRUE for at least one processing cycle.
• bError will only be reset to FALSE if the bExecute input is set to
FALSE as well.