Instruction manual
Fieldbus Interface 
125
Appendix 3 / ControlNet Interface 
Product Specifications: 
•  Card size (H x W x D): 3.38” [86mm] x 2.13” [54mm] x 0.59” [15mm] 
•  Power requirements: None - provided by network 
•  Operating environment: 
Maximum ambient temperature  120 deg F [48.9 deg C] 
Humidity  0-90% non-condensing 
ControlNet is a real-time, control-layer network providing high-speed transmission of both time-
critical I/O data and messaging data, including upload/download programming, configuration data 
and peer-to-peer messaging on a physical media link. ControlNet’s high-speed (5 Mbit/sec) 
control and data capabilities enhance I/O performance and peer-to-peer communication. 
ControlNet allows multiple controllers to control I/O on the same wires providing an advantage 
over other networks, which allow only one controller on the wire. ControlNet also allows multicast 
of both inputs and output peer data, thus reducing traffic on the wire and increasing system 
performance. ControlNet is deterministic and repeatable. 
The media for the fieldbus is an RG-6 quad shielded cable or fiber with support for media 
redundancy. Flexibility in topology options (bus, tree, and star) meets various application needs. 
Node address switches 
Cable connectors 
Mounting holes for stand-offs on 
MICRO 4000
®
NET controller 
LED status indicators 
Watchdog LED 










