1. Product Introduction & Overview

The 8C‑TPOXA1 is a coated I/O terminal / gateway / interface module in Honeywell’s Series 8 ecosystem, often used as a Profibus gateway / IOTA PWA (Printed Wiring Assembly) to bridge control modules with field networks and wiring. It functions as a central connection point (terminal assembly) integrating network connectors, redundancy sync capability, and signal routing.

Because this module is “coated,” it is designed to better endure harsh industrial environments (moisture, dust, corrosion). The 8C‑TPOXA1 is commonly deployed within DCS / automation systems where protocol translation (e.g. Profibus DP), redundant paths, and robust terminal connectivity are needed.

In the control rack, the module sits on an IOTA terminal board, connects with the I/O link cables, field wiring, network cables, and sync cables to provide both data and signal continuity. It plays a passive but vital role in ensuring that network communication and I/O signals reach their destinations reliably.

It is frequently referred to in vendor listings as “Profibus Gateway Module,” “Series 8 IOTA PWA,” or “Input/Output Terminal Assembly.”

2. Brand, Series & Positioning

3. Technical Specifications (Parameters)

Below is a summary table of known / vendor‑listed parameters for 8C‑TPOXA1. Use these as reference; confirm with official documentation for final design.

4. Applications & Use Cases

The 8C‑TPOXA1 module is typically used in these scenarios:

1. Profibus Gateway for Series 8 I/O Systems
   It serves as the Profibus DP interface node (PGM) for a Series 8 rack, allowing control systems to communicate with I/O modules over Profibus DP networks.

2. Dual / Redundant I/O Paths
   In high-availability systems, two IOTA modules may be used in parallel for redundancy, synchronized via a sync cable through the 8C‑TPOXA1.

3. Terminal Interface & Signal Distribution
   Acts as the physical interface for field wiring, network cabling, and I/O link cables, integrating multiple connectors in one module.

4. Upgrade / Retrofit Modules
   When upgrading control racks or adding network interfaces (e.g. connecting legacy Profibus systems), 8C‑TPOXA1 can be retrofitted as gateway/terminal interface.

5. Harsh / Corrosive Environments
   Because the module is coated, it is suitable for environments with humidity, dust, or moderate corrosive atmosphere exposures.

6. Automation / DCS Infrastructure
   In distributed control or plant control architectures, this module ensures that field devices and control logic remain connected under protocol, power, and redundancy requirements.

7. Data / Protocol Mediation
   As part of a gateway function, it may handle tasks like version control, cold start commands, peer‑to‑peer messages, and events/alarms in Experion LX environments.

In summary, 8C‑TPOXA1 is not a typical I/O processing module, but a critical gateway / interface piece in advanced control systems with networked I/O.

5. Advantages & Key Strengths

Here are the major advantages of using 8C‑TPOXA1 in an industrial control setup:

• Protocol Gateway Functionality
  Acts as a Profibus DP gateway (PGM) in Series 8 ecosystem, bridging between the control network and I/O modules.

• Redundancy Support
  Capable of dual IOTA / dual path configuration, improving system fault tolerance and uptime.

• Coated for Environmental Ruggedness
  Its protective coating increases resistance to moisture, dust, and moderate corrosion, extending module life in challenging plants.

• Compact, Integrated Design
  Packs multiple connector types (CAT5e, DB9F, sync cable) in a compact footprint (120×30×110 mm), minimizing rack space.

• Seamless Integration with Series 8
  Designed to work with existing Series 8 backplanes, I/O links, and protocols—simplifying system expansion.

• Diagnostic / Gateway Features
  Supports features like cold start, version control, peer messaging, event / alarm forwarding, redundancy sync—all enhancing reliability.

• Upgradeable & Modular
  Easily replaced or added without reworking cabling extensively; modular design assists maintenance.

• Vendor Compliance & Standard Certifications
  Meets UL, CE, RoHS standards per vendor listings, which aids in industrial compliance.

These strengths make 8C‑TPOXA1 a reliable choice for bridging field I/O and control networks in demanding automation systems.

6. Recommended Related & Popular Models

6.1 Related / Same Series / Function Models

Below are 5 modules in the same or related functional family (I/O terminal / gateway / interface modules) in the Series 8 / Honeywell I/O ecosystem:

These modules differ mainly in environmental protection (coated vs uncoated), connector layout, wiring density, and sometimes in support for network gateways or pure termination.

6.2 Other Popular Honeywell Modules (Same Brand / Ecosystem)

Here are 5 commonly used Honeywell Series 8 modules (logic, I/O, control) that often accompany the 8C‑TPOXA1 in system designs: