



Introduction
The 8C‑TPOXA1 is a gateway module in the Honeywell Series‑8 / Experion‑C300 I/O family, designed to bridge field‑level PROFIBUS DP networks with Honeywell process control systems. Its role is to translate and manage communications between distributed field devices (such as I/O stations, instruments, actuators) on a PROFIBUS DP network and the central DCS logic, enabling unified monitoring and control. This gateway is critical in plants where a mix of legacy and modern devices must coexist under a single automation architecture.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 8C‑TPOXA1 |
| Module Type | PROFIBUS‑DP Gateway Module / I/O Terminal Assembly (IOTA‑backplane) |
| Supported Protocol | PROFIBUS DP (RS‑485 physical layer) |
| Data Transfer Rate | Up to 12 Mbps on PROFIBUS network |
| Power Supply | 24 V DC via Series‑8 backplane |
| Module Current Rating | ~ 430 mA |
| Environmental Operating Range | 0 °C to 60 °C |
| Storage Temperature Range | –40 °C to +85 °C |
| Mounting | Standard Series‑8 rack / I/O chassis |
| Typical Dimensions | ≈ 22 × 124 × 126 mm (H × W × D) |
| Typical Weight | ≈ 0.20 kg |
| Network Functionality | Acts as PROFIBUS DP master/slave gateway; handles I/O exchange between field network and control system; supports redundancy when configured with dual‑IOTA assemblies |
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