42 Communication Module
Trident Planning and Installation Guide
Serial Ports
Each CM provides three optically isolated RS-232/485 serial ports which are user-
configurable for Modbus point-to-point or multi-point (network) connections.
Transmission rates up to 115 kilobits per second per port can be selected.
Network Ports
Each CM provides two network ports:
• One 10-megabit Ethernet port, with two connectors:
– 10BaseT
– Attachment unit interface (AUI) for a 10-megabit media access unit
(MAU)
• One 100-megabit Ethernet port, with two connectors:
– 100BaseTX
– Media independent interface (MII) for a 100-megabit MAU
MAUs may be used in place of the 10/100 BaseT RJ-45 twisted-pair connections
to convert the CM network ports to other Ethernet media types or to extend
network distances.
Supported Protocols
Each CM supports the following protocols:
• Modbus master or Modbus slave on the serial ports
• TCP/IP, TSAA, and TriStation network protocols on both network ports for
SOE, Wonderware HMI, OPC Server, and other TSAA- or DDE-compatible
applications
• JetDirect Network Printer Server DLC/LLC on both network ports
• Triconex Peer-to-Peer communication among multiple Trident systems or a
combination of Trident and Tricon systems
• Time synchronization over network ports for multiple Trident systems or a
combination of Trident and Tricon systems
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