Rockwell Automation 1747-SDN SLC 500 DeviceNet Scanner Module User Manual - Manual (Page 105)

Publication 1747-UM655B-EN-P - June 2007
AutoScan 105
However, for applications where you would like to customize
the I/O allocation size, configure a DEM instruction to adjust the
4-byte allocation.
2. Fill in the fields as shown, make sure to match the 1747-SDN
module’s Slot and DeviceNet Address to your particular scanner
module.
3. On the Send Data tab, enter the I/O allocation size, in bytes
(1…32).