P0973LN Foxboro A4‑Series Managed Ethernet Switch, I/A DCS Control Network Switch for Controller & Workstation Communication
P0973LN Foxboro A4‑Series Managed Ethernet Switch, I/A DCS Control Network Switch for Controller & Workstation Communication - Image 2
P0973LN Foxboro A4‑Series Managed Ethernet Switch, I/A DCS Control Network Switch for Controller & Workstation Communication - Image 3
P0973LN Foxboro A4‑Series Managed Ethernet Switch, I/A DCS Control Network Switch for Controller & Workstation Communication - Image 4

P0973LN Foxboro A4‑Series Managed Ethernet Switch, I/A DCS Control Network Switch for Controller & Workstation Communication

  1. P0973LN – Foxboro A4‑Series managed industrial switch (Target Model)
  2. P0973JP – 8 Copper + 8 Fiber ports A4 managed switch
  3. P0973LK – 24‑port full Gigabit RJ45 A4 managed switch
  4. H92904CC0500 – I/A Series ACP controller CPU module
  5. H90QHQE013N0 – Foxboro H90 DCS operator workstation
  6. FBM233 – I/A series Ethernet communication I/O module
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Description

P0973LN Foxboro A4‑Series Managed Ethernet Switch, I/A DCS Control Network Switch for Controller & Workstation Communication

 

Product Application

P0973LN belongs to Foxboro A4‑Series industrial managed switch family, together with P0973JP and P0973LK. It is the dedicated network switching device for Foxboro I/A Series and Foxboro Evo DCS control LAN. It builds the communication backbone between ACP controllers, FBM I/O communication modules and H90 operator / engineering workstations. Widely deployed in petrochemical, refining, chemical and power plant control rooms. Supports redundant DCS network topology, VLAN division, network fault alarm and remote SNMP monitoring, to guarantee deterministic, low‑latency real‑time data transmission for process control system.

P0973LN

Product Specifications

  • Part Number: P0973LN
  • Manufacturer: Foxboro (Schneider Electric)
  • Product Type: 1U 19” Rackmount Layer‑2 Managed Industrial Ethernet Switch
  • Port Configuration: Multi‑port Gigabit RJ45 + optional SFP fiber uplink ports (A4‑Series platform)
  • Switching Architecture: CoreFlow2 high performance switching fabric
  • Management: Local Console port, SNMP / RMON remote monitoring, Web configuration
  • Supported Protocol: VLAN, QoS, Port Mirroring, Link aggregation, Rapid Spanning Tree
  • Power Supply: Dual hot‑swap redundant AC power supply 100‑240VAC, 50/60Hz auto range
  • Form Factor: 1U height rack chassis
  • Operating Temperature: -40 ℃ ~ +70 ℃
  • Humidity: 5% ~ 95% RH, non‑condensing
  • Vibration / Shock: IEC 68‑2‑6 / IEC 68‑2‑29 industrial vibration standard
  • Certification: CE, UL, FCC, RoHS
  • Product Status: Spare replacement network switch for legacy I/A DCS projects
  • Approx. Weight: 2.7 kg

 

Core Technical Parameters

  • Industrial wide temperature design, suitable for control cabinet without air‑condition backup
  • Redundant hot‑swap PSU, eliminates single power point of failure
  • Full‑duplex communication for all ports, low forwarding latency for real‑time DCS control traffic
  • Port mirroring function for network fault diagnosis and packet capture
  • Compatible with Foxboro DCS network management software, network alarm upload to DCS HMI
  • Supports copper / mixed copper‑fiber networking for long‑distance control cabinet interconnection

 

Recommended Matching Spare Parts & Accessories (8 Items)

  1. Hot‑swap redundant AC power supply module for A4 switch
  2. SFP fiber transceiver module (Multi‑mode / Single‑mode)
  3. Console serial configuration cable
  4. Shielded CAT6 Ethernet cable for DCS control network
  5. OM3 multi‑mode fiber patch cord
  6. 19‑inch rack mounting bracket kit
  7. UPS uninterruptible power supply for switch cabinet
  8. Foxboro DCS network management tool software

P0973LN

Product Features

✅ Foxboro DCS Native Industrial Switch A4‑Series switch platform specially validated for I/A & Foxboro Evo control network, stable real‑time transmission for DCS control message.

✅ Redundant Hot‑Swap Power Supply Dual power slot design, single PSU failure will not interrupt DCS network communication.

✅ Rich Network Management Function VLAN, QoS, port mirroring, spanning tree, SNMP remote monitoring, convenient for DCS network maintenance and fault locating.

✅ Wide Temperature Industrial Grade -40~+70℃ operating range, strong anti‑vibration and EMC performance for industrial control cabinet environment.

✅ Flexible Uplink Expansion SFP fiber uplink slot supports long‑distance fiber interconnection between different control cabinets.

✅ 1U Compact Rack Mount Small 1U chassis, saves cabinet space in dense DCS control room.

✅ Network Fault Alarm Upload Port failure / power failure alarm signal can be uploaded to DCS operator HMI for real‑time network status monitoring.

 

Installation Guidelines

  1. Mount P0973LN switch into standard 19‑inch control cabinet with rack bracket.
  2. Install dual power modules and connect them to two independent UPS power circuits for power redundancy.
  3. Connect ACP controllers, H90 workstations and FBM communication modules to switch RJ45 ports with shielded network cable.
  4. Insert SFP fiber module if long‑distance cabinet interconnection is required, connect fiber patch cord.
  5. Connect console cable to notebook PC to complete initial IP, VLAN and spanning‑tree configuration.
  6. Enable SNMP function to upload network status alarm to DCS HMI.
  7. Perform single power supply failure test, confirm all DCS network communication keeps normal.
  8. Mark port wiring label for each DCS node for later maintenance.

 

Maintenance Instructions

Daily Maintenance Check switch power indicator and port link status on site. Monitor network alarm on DCS HMI. Check cabinet ventilation and temperature.

Periodic Maintenance (Every 6–12 months) Clean dust of switch air inlet. Check cable connector tightness. Backup switch configuration file. Upgrade firmware version if Foxboro official recommendation released.

Fault Maintenance

  • Single power alarm: Replace defective hot‑swap power module without powering down switch.
  • Port link down: Check Ethernet cable or SFP fiber module, swap to spare port and modify network configuration.
  • Network storm / communication delay: Use port mirroring function to capture DCS packet and locate abnormal node.
  • Do not modify VLAN and spanning‑tree parameters arbitrarily without DCS network engineer authorization.

Long‑Term Operation Tips Keep cabinet temperature within operating range. Backup switch configuration file off‑site. Stock spare power module and SFP transceivers for emergency replacement.

 

Brand Same‑Series Models (6 Models)

    1. P0973LN – Foxboro A4‑Series managed industrial switch (Target Model)
    2. P0973JP – 8 Copper + 8 Fiber ports A4 managed switch
    3. P0973LK – 24‑port full Gigabit RJ45 A4 managed switch
    4. H92904CC0500 – I/A Series ACP controller CPU module
    5. H90QHQE013N0 – Foxboro H90 DCS operator workstation
    6. FBM233 – I/A series Ethernet communication I/O module

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