Rockwell Automation 56AMXN/B ControlLogix AutoMax Comm Module - Manual (Page 25)

AutoMax DCSNet/RE RIO Module Page 25
Publication number 56AMXN-UM002A-EN-P November 2002
The network update time is approximately 3 ms per drop (see page 68).
Keep this in mind when selecting an RPI. There is no point in selecting
an RPI that is much faster than the network update time since the
network data will not update as fast as the RPI. In addition, it just adds
to the ControlLogix backplane traffic.
9. Click Finish >> to complete the module configuration.
10. To configure the drops with which the AMXN will exchange data,
expand the Configuration tag for the 56AMXN and write the config
data. Refer to page 17 for possible values.
11. Save the program and download it to the ControlLogix processor.
Configuring Listen-Only Connections
In a ControlLogix system, multiple processors can receive inputs from a
module. Only one processor can control the outputs.
To configure a listen only connection in RSLogix 5000, you must be
offline.
1. If you are creating a new project, select File/New to create a new
project, give the processor a name, and enter the slot it occupies in
the ControlLogix rack.
2. Right click on I/O configuration and select New Module…
Select a module of Type 56AMXN, Description DCSNet Interface from
the list and Click OK. RSLogix 5000 displays the Module Properties –
Local (56AMXN 2.1) dialog box.
3. Assign the module a Name and optionally a Description.
4. Set the Slot to match the slot number of the module in the chassis.
5. Select a Comm Format from the list. Select a master or slave listen
only Comm Format. Choose a Comm Format size as large as or
smaller than the owning connection.
To change the Comm Format, you must delete the old module and add a
new one with the required Comm Format.
6. Click Next > to display the second Module Properties – Local
(56AMXN 2.1) dialog box (same as Connection Tab in Module
Properties)