Description
Key Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Schneider Electric |
| Model | A2H254-16 |
| Order Number | P0973BK |
| Product Type | Ethernet Switch / Industrial Network Module |
| Product Family | Modicon Premium / Transparent Factory Ethernet |
| Number of Ports | 16 Ethernet ports |
| Communication Interface | Ethernet TCP/IP |
| Network Speed | 10/100 Mbps (depending on configuration) |
| Transmission Medium | Twisted pair Ethernet |
| Connector Type | RJ45 |
| Mounting | Industrial cabinet installation |
| Power Supply | 24 VDC industrial supply |
| Network Function | PLC-to-PLC, PLC-to-SCADA, HMI communication |
| Operating Temperature | Industrial control cabinet environment |
| Protection Rating | Industrial enclosure dependent |
| Application | Factory automation Ethernet networks |
Product Introduction
Schneider Electric A2H254-16 P0973BK Overview
The Schneider Electric A2H254-16 P0973BK is an industrial Ethernet communication device used in Modicon automation systems to provide network connectivity between PLC controllers, HMIs, SCADA systems, and other Ethernet-based industrial equipment. It is commonly found in legacy Modicon Premium automation installations where Ethernet infrastructure must be maintained.
The Schneider Electric A2H254-16 P0973BK supports expansion of industrial communication networks by providing multiple Ethernet ports for control system integration. For replacement work, engineers should verify network topology, IP addressing, switch configuration, and compatibility with existing Modicon PLC hardware before installation.
A2H254-16
Application Scenarios & Field Pitfalls (The Engineer’s Perspective)
Engineering Pain Point
A production line can continue running mechanically while losing supervisory visibility because of a network communication failure. A failed Ethernet switch inside a control cabinet can interrupt PLC messaging, HMI updates, remote diagnostics, and SCADA data exchange. The hardware itself is simple compared with a controller, but its failure can affect many connected systems at once.
The Schneider Electric A2H254-16 P0973BK is typically maintained in existing Modicon Premium installations where replacing the entire communication architecture would require unnecessary engineering changes.
Typical Applications
- Automotive Manufacturing – PLC communication networks connecting assembly cells, HMIs, and production monitoring systems.
- Water Treatment Plants – Ethernet links between PLC cabinets, operator stations, and remote I/O systems.
- Process Industries – Control network connections for pumps, valves, instrumentation, and supervisory systems.
- Material Handling Systems – Conveyor automation networks with multiple PLC and HMI nodes.
Technical Pitfalls to Avoid
- Network Configuration Documentation
Before replacement, record IP addresses, network topology, connected devices, and communication settings. An unmanaged hardware swap can create duplicate IP conflicts or communication failures.
- Cable and Port Identification
Industrial cabinets often contain many similar Ethernet cables. Label every connection before removal. Incorrect port mapping can delay startup testing.
- Legacy System Compatibility
Older Modicon systems may rely on specific Ethernet communication methods. Verify PLC firmware, communication modules, and network settings before installing replacement hardware.
Field note: For legacy Ethernet equipment, keep a copy of the original network drawing and PLC communication parameters. The switch is only one part of the communication path.
Related Products
- Schneider Electric A2H124-24FX
Related industrial Ethernet switch from the same Modicon communication family. Used for different port density requirements. - Schneider Electric A2H124-24FX-RH
Industrial Ethernet switch variant designed for extended application environments. Verify environmental requirements before substitution. - Schneider Electric TSXETG Series
Ethernet gateway products used in Modicon Premium and legacy automation networks for communication conversion applications. - Schneider Electric TSXP571634
Modicon Premium processor module commonly used with Ethernet communication architectures. - Schneider Electric TSXETY4103
Premium Ethernet communication module providing PLC network connectivity. - Schneider Electric TSXETY5103
Ethernet module variant for Modicon Premium PLC systems with enhanced communication functions. - Schneider Electric Modicon Premium PLC Platform
The automation platform where A2H254-16 network components are commonly applied. - Schneider Electric Modicon M340 Platform
Later-generation PLC platform often selected during migration projects from Premium systems. - Schneider Electric ConneXium Industrial Ethernet Switch Series
Newer industrial network hardware family used for Ethernet infrastructure in automation systems.
