Allen-Bradley DeviceNet 1761-NET-DNI, User Manual, Page: 87 / 101

1761-6.5
Explicit Messaging (DNI Series B Only) 8-3
Routing Profile Configuration
The 10 profiles stored within the DNI in profile registers. To configure a
routing profile, the user creates a write message in the controller’s ladder
logic with a destination node address of 240 to 249. The write message must
have a data length of five words. Each word corresponds to one of the five
components in the routing profile, as follows:
When the DNI receives a write message with a destination address of 240 to
249, it stores the five words of data in the corresponding profile register,
location 240 to 249.
Explicit Messaging Examples
Once the profiles are correctly loaded into the DNI, getting data from a
DeviceNet device is as simple as reading data from another controller. The
procedure is illustrated by the following examples.
Reading (Get) Data Example
For the DeviceNet network shown above, we want to read data from the
proximity sensor at node 15. The proximity sensor has specific DeviceNet
parameters that are accessible via the DeviceNet network. In this example,
profile register 240 within the DNI (node 10) has been configured to access
specific data within the proximity sensor.
Word Title Function
0 Target Node Node number (0 to 63) of the target device on DeviceNet that
communications will be established with.
1 Class Class of the target DeviceNet object.
2 Instance Instance of the target DeviceNet object.
3 Attribute Attribute of the target DeviceNet object that will be read from or
written to (get/set).
4 Size Amount of data to be read or written in bytes.
Node 5
Node 15
Node 25
Node 30
Node 20
Node 10
AB Parts