Rockwell Automation 2080 Micro800 Digital and Analog Plug-in Modules - Manual (Page 13)

Rockwell Automation Publication 2080-UM004B-EN-E - December 2013 5
Micro800 Plug-in Modules Chapter 1
as well as for communications over long cable lengths. Depending on the
application and baud rate setting, you can extend this length.
DeviceNet Scanner — 2080-DNET20
The Micro800 DeviceNet plug-in module serves as a scanner and client for
explicit messaging to remote devices including I/O and drives, using a proven and
well-accepted fieldbus/network. It also provides better performance than using
serial and Ethernet (EtherNet/IP Class 3) communications.
For more information, see the DeviceNet Plug-in – 2080-DNET20 on page 39 .
IMPORTANT 2080-SERIALISOL is suitable for communication over longer cable length
of up to 1000 m using RS485, with up to 19200 bps baud rate.
The electrical characteristics of cable used and good wiring practices are
very critical in achieving reliable communication performance over longer
cable length. A shielded twisted pair RS485 22AWG cable (example:
3106A from Belden) is recommended. Terminate both ends of the cable
with 120 ohm resistance.