Technical Specifications of T8123

Manufacturer: ICS Triplex (Rockwell Automation).

Part Number: T8123 Trusted TMR Processor Interface Adapter.

Installation: Connects directly to the controller chassis rear panel.

RS422/485 Port 1: Provides two configurable RS422/485 connections (2-wire or 4-wire).

RS422/485 Port 2: Provides one dedicated RS422/485 2-wire connection.

Fault Connections: Includes fault/fail connections for Active and Standby processors.

Diagnostics Port: Offers a dedicated processor diagnostics connection.

PSU Monitoring: Includes PSU shutdown monitor connections for power supply health.

Time Synchronization: Option for connecting IRIG-B122 and IRIG-B002 signals.

Modbus Master: Option to enable Modbus Master on the Trusted Communications Interface.

Communication and Connectivity Features

The T8123 gives you flexible serial communication options. Configure the first two ports as RS422 or RS485. Choose 2-wire or 4-wire configurations based on your devices. The third port provides a fixed RS422/485 2-wire connection. Use the fault connections to monitor Active and Standby processor status. The diagnostics port gives you direct access to processor health data. Connect PSU shutdown monitors to track power supply failures. This T8123 adapter ensures your Trusted system communicates reliably with external equipment.

Advanced Options and Configuration

Enable the IRIG-B time synchronization option for precise timing. The T8123 supports both IRIG-B122 and IRIG-B002 signal formats. This feature synchronizes your Trusted processor with external time sources. You can also enable the Modbus Master option on the Trusted Communications Interface. This allows the T8123 to act as a Modbus master device. Your Trusted processor can then read data from Modbus slave devices directly.

Installation and Compatibility Guide

Mount the T8123 directly to the back of your Trusted controller chassis. No special tools are required for installation. The adapter fits into a dedicated slot on the chassis rear panel. Connect your RS422 or RS485 devices to the appropriate ports. Use twisted pair cables for best noise immunity. Set the port configuration (2-wire or 4-wire) in your Trusted system software. Enable IRIG-B or Modbus Master options during system configuration. Verify all connections before powering up the system.

Package Contents

One ICS Triplex T8123 Trusted TMR processor interface adapter.

Product documentation and configuration guide.

Frequently Asked Questions (FAQ)

Q: What is the difference between T8123 and standard serial adapters?
A: The T8123 is designed specifically for ICS Triplex Trusted TMR systems. It includes processor diagnostics and PSU monitoring functions.

Q: Can I use all three RS422/485 ports simultaneously?
A: Yes, you can use all ports at the same time. The two configurable ports and the fixed 2-wire port operate independently.

Q: Do I need both IRIG-B122 and IRIG-B002 options?
A: No, choose the format that matches your time synchronization source. Most users select one format based on their system clock.

Q: How do I enable the Modbus Master option?
A: You enable this option through the Trusted system software. You may need a license key for this feature.

Q: Is the T8123 compatible with older Trusted processors?
A: Yes, the T8123 works with all Trusted TMR processors. Check your firmware version for Modbus Master support.