Lenze DDS Function library MemDrv - Manual (Page 25)

Function library LenzeMemDrv.lib
Functions for RAM memory access
4.9 L_MemWriteDWORD
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LenzeMemDrv.lib EN 1.1
4.9 L_MemWriteDWORD
INT. L_MemWriteDWORD(dwData, byRamBlockNr, wOffset)
This function can be used to write the value of a variable of type "double word" into a RAM block of
the PLC.
wOffset
Block 1 (64KByte)
Block 2 (64 KByte)
RAM
byRamBlockNr
1
n
Block n (64 KByte)
2 Double Word
(32 Bit)
dwData
Transfer parameters
Identifiers Data type Info/possible settings
dwData Double word Data value to be written (32 bits).
byRamBlockNr Byte Selecting the RAM memory block into which dwData is to be written.
1 RAM memory 1, size: 64 kbytes
2 RAM memory 2, size: 64 kbytes
wOffset Word Destination address in the selected RAM memory block to which dwData is to be written.
0 ... 65532 Destination address (offset)
·
Only even values are permissible as offset!
Return value: Integer
Value Meaning
0 Write request completed.
−60 Write request has not been transferred to the operating system since the transfer parameters are faulty:
byRamBlockNr is invalid.
−35 Copy job has not been transferred to the operating system since the transfer parameters are faulty:
wOffset is an odd address or a value beyond the permissible range (0 ... 65532).
−50 Copy job has not been transferred to the operating system since the memory is presently accessed
(e. g. via codes).