Product Overview

The ABB TP853 is a communication baseplate used with ABB AC 800M controllers and several CEX-Bus communication interface modules. Its order number is 3BSE018126R1. The baseplate provides the physical mounting and communication connections required by compatible interface modules such as the CI853, CI855, CI857, and CI861, depending on the system configuration.

TP853 is an important component in modular System 800M installations because it provides the interface between the communication module and external network or serial connections.

Technical Specifications

ABB documentation confirms that TP853 is used as the baseplate for multiple AC 800M communication interfaces. Its exact external interface depends on the communication module installed.

Main Features

• Modular AC 800M design for flexible communication expansion.
• CEX-Bus connectivity between the controller and communication interface.
• RJ45 connections for supported communication applications.
• Code-locking mechanism helps prevent installation of an incompatible module.
• Hot-swappable architecture is supported for compatible communication configurations.
• Suitable for maintaining existing ABB automation systems without redesigning the complete controller architecture.

System Integration

The TP853 does not function as a standalone communication controller. Instead, it provides the physical and electrical interface for the communication module installed on it.

For example, when combined with CI853, TP853 provides two RJ45 connections for dual RS-232C communication. The CI853 supports protocols including Modbus, Siemens 3964R, COMLI, and customer-specific protocols, with communication speeds selectable according to the application.

With other compatible communication modules, the same TP853 baseplate can provide different communication functions, making it a versatile component within the AC 800M platform.

Applications and Maintenance

ABB TP853 is suitable for process automation, power plants, manufacturing systems, industrial communication networks, and System 800xA control installations where AC 800M communication interfaces are required.

During installation, mount the baseplate securely and verify the module code, CEX-Bus connections, and external cabling. Before replacement, confirm that the installed communication module is compatible with the TP853 configuration.

For maintenance, inspect the RJ45 connectors, mounting points, CEX-Bus contacts, and code-lock mechanism for physical damage or contamination. Correct identification of the TP853 / 3BSE018126R1 part number is recommended when purchasing a replacement, particularly in legacy AC 800M systems.