GFK-1322A
Chapter 4 Configuring the LBIM
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4
Note
The configured length of each register must match EXACTLY the length
defined in the 90-30 backplane configuration for the module.
Valid Bit End Address
Valid bits are automatically assigned by the program and begin at the highest defined %I
location and grow down in the %I space. Setting the valid bit end address determines
where the program begins assigning the valid bits. For example, if a configuration will
be using 50 %I references and 64 total valid bits, the valid bit end address should be
defined at or above 50 + 64 + 8 (reserved) = %I0122. The first defined variable will have
a valid bit assigned to %I0122, the next will be assigned to %I00121, and so on. Valid
bit referencing can be altered after variables are defined.
Button Commands
1. Defaults
Click on this button to set the default maximum sizes and start addresses for CPU types.
Clicking the button activates an edit screen. After changing the desired values, click the
default button again to save the changes and return to the module configuration screen.
2. Modules Report
Click this button to print a report that contains the current configuration values.
3. Save Cfg
Click on this button to save the current configuration to disk. This action does not save
the configuration to the LBIM module.
4. Cancel
Click on the cancel command button to leave this screen without saving the configuration
to disk. All changes since the last save will be lost.
Summary of Contents for 90-30 PLC
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