10 Controller Architecture
Trident Planning and Installation Guide
Each CM provides three RS-232/485 serial ports and two Ethernet ports. These
ports support a variety of communication methods, protocols, and physical media
types that enable the controller to communicate with:
• External host computers
• Distributed control systems (DCS)
• Open networks
• Network printers
• Other Trident or Tricon V9 controllers
For CM specifications, see Chapter 3, “System Description.” For details about
protocols, applications, and other topics concerning Ethernet networks, see the
Trident Communication Guide.
Physical Communication Interfaces
The following table lists the physical communication interfaces that the MP and
CM provide.
Interface MP CM
RS-232/RS-485 Modbus Serial Port !!
10BaseT Ethernet Port !!
10BaseT/100BaseTX Auto-negotiable Ethernet Port !
Attachment unit interface (AUI) for
media access unit
(MAU)
!
Media independent interface (MII) for MAU !
Debug port !!
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