Triconex 3503N Digital Input Module 32-Channel Safety System Component
Each TCM contains two network ports – NET 1 and NET 2. Models 4351A and 4353 have
two copper Ethernet (802.3) ports and Models 4352A and 4354 have two fiber optic Ethernet ports.
NET 1 and NET 2 support TCP/IP, Modbus TCP/IP Slave/Master, TSAA, TriStation,
The NET 1 also supports the Peer-to-Peer and Peer-to-Peer Time Synchronization protocols.
A single Tricon system supports up to four TCMs, which must reside in two logical slots.
Different TCM models cannot be mixed in a logical slot.
Each Tricon system supports a total of 32 Modbus masters or slaves, including network and serial ports.
The hot standby feature does not apply to TCMs, but you can replace a defective
TCM while the controller is online.
The Tricon system is a powerful, scalable design that ensures continuous operation,
complies with international safety standards such as IEC61508. and meets the
requirements for emergency shutdown (ESD), fire and gas protection (F&G),
burner protection (F&G) and fire safety.
It also meets the requirements of applications such as Emergency Shutdown (ESD),
Fire and Gas Protection (F&G), Burner Management System (BMS),
High Integrity Pressure Protection (HIPPS) and Turbomachinery Control (TMC).
The redundant high availability architecture provides a flexible, robust, reliablea
nd powerful solution that is ideally suited for customers looking to achieve
environmental and safety excellence.
Each TCM supports an aggregated data rate of 460.8 Kb/s for all four serial ports.
Tricon programs use variable names as identifiers, while Modbus devices use numeric
addresses called aliases.
Therefore, each Tricon variable name must be assigned an alias that will be read by
or written to the Modbus device.
An alias is a five-digit number that represents the Modbus message type and the address
of the variable in the Ticon. An alias number is assigned in the TriStation.
Any standard Modbus device can communicate with Tricon via TCM, provided an alias is
assigned to the Tricon variable.
The alias number must also be used when the host accesses the Tricon through other
communication modules.
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