Rockwell Automation VSM500 Integrated Drive/Motor DeviceNet Option Board - Manual (Page 37)

Configuring a Scanner 4-5
Figure 4.7 shows an example that uses polled I/O. The Enable box was selected, 4
was typed in the Rx box because Input Assembly 71 is being used, and 4 was typed in
the Tx box because Output Assembly 21 is being used. Finally, Every Scan was
selected in the Poll Rate box.
Step 10. Click OK. A DeviceNet Manager message appears.
Step 11. Click Yes. The Scan List Editor dialog box reappears. It should have the size
of I/O in the RX Size and Tx Size columns.
The scan list is now set up, and the VSM500 is in the scan list. You are now ready to
map the VSM500 unit’s data in the scanner.
4.2 Mapping the VSM500 Unit’s Data in the Scanner
Data from I/O messages may be mapped to the SLC’s discrete I/O area or to an I/O
area located in the M0 and M1 files. This mapping determines where a ladder logic
program can find data that is transmitted over the network. In our example, we will use
the discrete area.
You must map both the input I/O and the Output I/O.
Figure 4.8 – DeviceNet Manager Message
Figure 4.9 – 1747-SDN Scan List Editor Dialog Box