Lenze DDS Global Drive PLC Developer Studio - Manual (Page 16)

3.3 L_CanDSxOpen − Initialisation of the CanDSx driver
Function library LenzeCanDSxDrv.lib
Functions/function blocks
3−4
L
LenzeCanDSxDrv.lib EN 1.2
3.3 L_CanDSxOpen − Initialisation of the CanDSx driver
Function
This function is used to initialise the CanDSx driver in the operating system of the PLC.
·
For initialisation, the transfer parameter bOpen must be TRUE.
·
After the driver has been initialised, the indeces accessed via the system bus interface will not
be directed to the automatically assigned codes, but redirected to the codes of the mapping
table configured by the function L_CanDSxIndexInitCode.
Declaration
DWORD L_CanDSxOpen (bOpen);
Transfer parameters Data type Information/possible settings
bOpen Bool Initialisation of the CanDSx drive in the operating system.
TRUE The CanDSx driver is initialised in the operating system.
Return value Data type Value/meaning
Double word Status
Bit Value
0 0 Driver initialised.
1 Driver is not initialised.
·
Remedy: Call the function with transfer parameter bOpen = TRUE.
1−15 Reserved for future extensions (bits are set to 0).
·
Invalid if bit 0 = 1
16−31 Version of function library LenzeCanDSxDrv.lib
·
Format: Main version/subversion (e. g. 0103hex = version 1.03)
·
Invalid if bit 0 = 1
Note!
If the function L_CanDSxOpen is called while code read or write requests are active an error may
occur!
This is why all actions with code access should be completed before this function is called.
Example
Calling the function in ST:
IF bOpenCanDSxDriver AND NOT bOpen THEN
bOpen :=
TRUE;
dwReturnOpen := L_CanDSxOpen(bOpen:= TRUE);
END_IF