Rockwell Automation 1757-ABRIO Installation Instructions - Manuel (Page 8)

8 Process Remote I/O (RIO) Communication Interface Module
Publication 1757-IN916C-EN-P - March 2008
Wire the Connector for the Remote I/O Network
Follow these steps to wire the connector.
1. Connect Line 1 of the remote I/O cable to the upper pin.
2. Connect the shield to the middle pin.
3. Connect Line 2 to the lower pin on the 1757-ABRIO.
4. Terminate both ends of a remote I/O network by using external
resistors attached to the physical ends of the network.
There should be two and terminators on the network.
Select Proper Resistor
Use 82 ohm resistors if the network operates at 230.4 kbps or if the network
operates at 57.6 kbps or 115.2 kbps and none of the devices in the table below
are present. The maximum number of devices on the network is 32.
Use 150 ohm resistors if the network contains any of the devices in the table
below, or if the network operates at 57.6 kbps or 115.2 kbps and you do not
require the network to support more than 16 devices.
Device Type Catalog Number Series
Adapters 1771-AS All
1771-ASB
1771-DCM
Miscellaneous 1771-AF