Allen-Bradley POINT I/O PROFIBUS 1734-APB, User Manual, Page: 54 / 88

Publication 1734-UM005B-EN-P - June 2001
4-16 Communication and I/O Table Mapping
Grouping Modules for
Memory Management
You can install up to 8 of the same type of module (identical product
code) next to each other and use only one word of input or output
memory. The module requirements are:
•
the modules must be next to each other
•
the modules must be members of the same module family
•
must total 8 channels or less
•
the modules will share the same configuration data.
You select the option 4, bit stuffing module, in the hardware catalog
in the configuration tool.
Note that the grouped modules will share the same configuration data
as the first module in the group. If the first module has no
configuration data, the other three modules will have no configuration
data.
Chapter Summary and
What’s Next
In this chapter, you learned about communication and I/O table
mapping. Move to chapter 5 for troubleshooting.
1. Select the 1734-OB2E (hardware type 1) from the hardware catalog.
The adapter will open a byte and store the first 1734-OB2E module there.
2. Select the 1734-OB2E (hardware type 4 - grouped) from the hardware catalog.
The adapter will store the second 1734-OB2E in the opened byte.
3. Select the 1734-OB2E (hardware type 4 - grouped) from the hardware catalog.
The adapter will store the third 1734-OB2E in the opened byte.
4. Select the 1734-OB2E (hardware type 4 - grouped) from the hardware catalog.
The adapter will store the fourth 1734-OB2E in the opened byte.