Description
The MOLEX APP-ETH-PCU-C is an applicom PCU2000ETH Ethernet communication card designed for industrial PC-based automation, SCADA, and HMI applications. It provides a single-channel Ethernet interface using a Universal PCI 3.3/5 V bus and supports 10/100 Mbps Ethernet communication.
The card is intended for installation in a compatible industrial computer or control workstation, providing Ethernet connectivity between the host PC and industrial automation networks. Molex documentation identifies the card as part of the applicom network interface family.
🔧 Key Features
• Molex applicom PCU2000ETH communication card
• APP-ETH-PCU-C engineering number
• Single Ethernet communication channel
• 10/100 Mbps Ethernet TCP/IP
• Universal PCI 3.3 V / 5 V bus
• RJ45 Ethernet connection
• AMD SC520 processor
• Designed for SCADA and HMI systems
• OPC / DLL / DAS interface support
• Windows operating-system support
• CE certified
• RoHS compliant
📋 Product Datasheet
• Brand: MOLEX
• Product Family: applicom
• Model: PCU2000ETH
• Engineering Number: APP-ETH-PCU-C
• Molex Series: 112000
• Product Type: Ethernet Network Interface Card
• Communication Protocol: Ethernet TCP/IP
• Communication Speed: 10/100 Mbps
• Number of Channels: 1
• Network Connector: RJ45
• Bus Interface: Universal PCI 3.3 V / 5 V
• Processor: AMD SC520
• Maximum Input Power: 5.5 W
• Operating Temperature: 0 to +65 °C
• Interface Software: OPC / DLL / DAS
• Host Applications: SCADA / HMI
• Net Weight: Approx. 140 g
• Country of Origin: Production-location dependent
• Mounting: PCI card slot
• Compliance: CE / RoHS
The published Molex specifications list 10/100 Mbps Ethernet, one channel, RJ45 connectivity, an AMD SC520 processor, 5.5 W maximum input power, 0–65 °C operating temperature, and a Universal PCI 3.3/5 V interface.
🏭 Typical Applications
The APP-ETH-PCU-C can be used in:
• Industrial PC systems
• SCADA workstations
• HMI systems
• Factory automation networks
• Industrial Ethernet communication
• Process monitoring systems
• Machine-control computers
• Legacy PC-based automation systems
⚡ Functional Description
The PCU2000ETH acts as an intelligent Ethernet communication interface between an industrial PC and an Ethernet-based automation network. The card uses its PCI interface to communicate with the host computer while providing Ethernet connectivity through the RJ45 port.
Its applicom software architecture supports interfaces such as OPC, DLL, and DAS, making the card suitable for PC-based supervisory and data-acquisition applications.
🔌 Installation & Configuration
Basic installation procedure:
• Shut down the industrial PC and disconnect power
• Verify that the computer provides a compatible Universal PCI slot
• Install the APP-ETH-PCU-C securely in the PCI slot
• Connect the Ethernet cable to the RJ45 port
• Start the computer and install the appropriate applicom driver/software
• Configure the Ethernet network parameters
• Verify communication with the connected automation equipment
For legacy systems, it is important to confirm operating-system and driver compatibility before replacement.
🛠️ Commissioning Checklist
• Confirm PCI slot compatibility
• Check card recognition by the host PC
• Verify driver installation
• Confirm Ethernet link status
• Set the required IP/network parameters
• Test TCP/IP communication
• Verify SCADA/HMI data exchange
• Check OPC/DLL/DAS communication if applicable
📦 Ordering Information
MOLEX APP-ETH-PCU-C | PCU2000ETH | 10/100 Mbps Ethernet TCP/IP Card | Universal PCI 3.3/5 V | RJ45
Molex documentation also identifies APP-ETH-PCU-C as the engineering number for the PCU2000ETH card and 1120000005 as an associated part number



