Omron SYSMAC CS Series Operation Manual page 194

I/O Communication Characteristics
Example
Removing Gaps from the
I/O Mapping
Compressing the I/O
Mapping
1,2,3...
The figure below illustrates the effects of re-allocating I/O modules, when
Auto Addressing has been disabled.
Note: Auto-addressing is disabled
Since gaps in the I/O mapping are generally undesirable, the CS1/CJ1W-
PRM21 Master DTM provides a means to remove all gaps, after finalizing the
I/O mapping procedure. This removal is accomplished by compressing the I/O
modules in a particular area.
Compressing re-allocates all I/O modules in an area as close to the start of
the area as possible. Compressing an area does not change the sequence of
the slave devices and/or the I/O modules. It only removes the unused mem-
ory gaps. Compressing can be initiated for each area individually.
In order to compress an area, perform the following sequence.
1. Open the CS1/CJ1W-PRM21 Master DTM - Configuration User Interface,
and select the Slave Area tab.
2. Select the Output Allocation tab or the Input Allocation tab, to display the
areas to compress.
3. To compress the area, press the Compress button at the bottom.
4. After finalizing the compress action, select the Save button at the lower
right corner, to save the changes made.
Initial I/O Configuration
Output module 2 of slave device
#2 was moved to Output area 2,
location CIO 3401, leaving behind
a gap in Output area 1.
Section 6-5
173