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13.8 System Registers used with RM
Table 13.3 – RM System Registers
%SR174 Removable
Media Protect
Write a 1 to prohibit read/write access to the removable media card.
Write a zero (0) to allow access.
%SR175 Status
This shows the current status of the RM interface.
%SR176 Free Space
This 32-bit register shows the free space on the RM card in bytes.
%SR178 Card Capacity
This 32-bit register shows the total card capacity in kilobytes.
Possible status values are shown in the table:
For additional status information, consult the i3 configurator Help File.
Table 13.4 – RM Status Values
0
RM interface OK
1
Card present but unknown format
2
No card in slot
3
Card present, but not supported
4
Card swapped before operation was complete
5
Unknown error
