Rockwell Automation 2755 AdaptaScan Software - Manual (Page 151)

10–14
Publication 2755-838
Flow Control Example
The following shows how DeviceNet Input #8 and Output #16
control the transmission of messages. Output #16 is changed by the
Reader and Input #8 is changed by the controller.
DeviceNet Scan Number Message Data DeviceNet
Output #16
DeviceNet
Input #8
1 - Poll - OFF (0)
1 - Response No Message Sent OFF (0)
2 - Poll - ON (1)
2 - Response Message 1 Sent ON (1)
3 - Poll - OFF (0)
3 - Response Message 2 Sent OFF (0)
Note: You can disable handshaking by deselecting the handshake
checkbox (see page 10–11). With handshaking disabled, it may be
possible to miss data if the Reader decodes data too fast for the
controller. In addition, identical data may not be read unless data
that changes such as package count is added to the message sent by
the Reader.