Rockwell Automation 2755-SNx Adaptascan Bar Code Readers - Manual (Page 230)

12–9 Communicating with a PLC-5 Processor on a DeviceNet Network using Explicit Messaging
Publication 2755-6.8
6. Click the Edit Scan List button to open the Scan List Editor.
7. Select A03 and click the Edit I/O Parameters button.
8. Edit the following parameters in the Edit Device I/O Parameters
dialog:
•
Under I/O Type, select the Polled check box.
•
In the Poll Rx Size box, type 8 (Bytes)
•
In the Poll Tx Size box, type 1 (Bytes)
•
From the Poll Rate list box, select Every Scan.
The dialog should look like this:
9. Click OK to return to the Scan List Editor dialog.
Node 3 (AdaptaScan) is enabled and will be polled by the SDN
scanner. The SDN scanner will expect 8 bytes of data (4
characters + 4 bytes of overhead) and will transmit 1 byte of data
back to the module (BTW N22:1).