Chapter 3 Programming
3
– 19
3.6.2 Marker memory
Normally users do not have to take care about internal address of data memory however, if needed, the marker
memory is useful. The address of marker memory is %M.
For example, DWORD data dwTest, WORD data wTest_H and wTest_L are declared in the
address %MD10, %MW20 and %MW21. Then high word and low word can be accessed separately with
using %M addresses. The relation between each data types are same as page 3-14. Just replace “Q” with “M”. The
marker memory does not support RETAIN nor PERSISTENT flags.
Variable declaration
Login display
The max. size of marker memory is 16KB. Supported address range is shown below.
Data type
Address range
BOOL
%MX0.0 to %MX16383.7
BYTE
%MB0 to %MB16383
WORD
%MW0 to %MW8191
DWORD
%MD0 to %MD4095
LWORD
%ML0 to %ML2047
Summary of Contents for EH-A14EDR
Page 6: ...MEMO ...
Page 10: ...MEMO ...
Page 141: ...Chapter 3 Programming 3 81 Program ...
Page 166: ...Chapter 5 Maintenance 5 4 MEMO ...
Page 170: ...Appendix A1 4 MEMO ...