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DOK-INDRV*-MLD3-**VRS*-AP02-EN-P
Rexroth IndraDrive Rexroth IndraMotion MLD (2G) as of MPx-18
Address access with different data types
LSA Control S.L. www.lsa-control.com comercial@lsa-control.com (+34) 960 62 43 01
Fig. 7-39:
Writing byte by byte
Access via flags
The "Merker_LByte" and "Merker_HByte" flags are used to write the bytes no.
200 and 201. The "Merker_WORD" flag with address "%MW100"
(100 * 2Byte=200) is to read a 16-bit value. "Merker_WORD" in this example
has the same address as "Merker_LByte".
For systems with different byte orders, "Merker_WORD" is used to read dif‐
ferent values.
Fig. 7-40:
Value with Big Endian (as of MPx17): "Merker_WORD = 256"
To compensate the byte order in the PLC program, the addressing of the
byte flags must simply be adjusted in the variable declaration.
Fig. 7-41:
Adjusting the addressing of the byte flags in the variable declaration
Access via pointers
In a test program, values are assigned to the "arWORD" field of the "WORD"
type. A pointer initialized with the start address of the field is to be used to
read a value of the "DWORD" type. This value is checked in an IF query. De‐
pending on the result, a "bDummy" variable is set. In the first figure, the IF
query is successful and the "bDummy" variable is set to TRUE.
Bosch Rexroth AG
Notes on commissioning and application
211/267
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