Allen-Bradley 1784-PCIC ControlNet PCI Communication Card
The Allen-Bradley 1784-PCIC, also cataloged as the 1784-PCIC ControlNet PCI Communication Card, operates as a dedicated hardware component for deterministic network interface bridging and peer-to-peer data interchange within ControlNet communication systems. Installed into a standard PCI host slot, the card enables industrial computers,SoftLogix controllers, and workstation platforms to send VNet messages, program PLC-5 processors, and execute real-time I/O control over coaxial ControlNet media.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1784-PCIC |
| Brand | Allen-Bradley |
| Origin | USA |
| Weight | 0.40 lbs (0.18 kg) |
| Dimensions | Standard PCI Half-Length Expansion Card |
| Operating Temp | 0 to 60 deg C |
| Power Consumption | 5 VDC at 700 mA (3.5 W via PCI bus) |
| Bus Interface | Universal PCI Bus (32-bit, 3.3V / 5V signaling) |
| Network Protocol | ControlNet (VNet messaging, PLC-5 messaging) |
| Physical Connectors | Dual BNC Coaxial Connectors (Channel A / B redundant) |
| Network Speed | 5 Mbps deterministic token-passing bus |
| Product Series | 1784 Communication Interface Series |
Backplane Bus & Deterministic Network Integration
The 1784-PCIC interfaces directly with the host computer's local PCI expansion bus, exchanging control packets with lower CPU overhead during cyclical I/O updates. Operating as an active node on the 5 Mbps ControlNet token ring, the card manages Scheduled and Unscheduled messaging tasks without interrupting host application execution. Built-in onboard memory and physical layer controllers preserve firmware flash compatibility and maintain stable backplane bus communication velocity across control workstation reboots.
Frequently Asked Questions
Q: What are the primary power requirements provided to the 1784-PCIC card?
A: The module draws power directly from the host motherboard PCI slot, requiring 5 VDC at 700 mA maximum current load.
Q: Can the 1784-PCIC card support dual redundant ControlNet coaxial media connections?
A: Yes, the card features two front-panel BNC connectors (Channel A and Channel B) designed for automatic medium redundancy on dual-cable ControlNet physical media.
Field Installation Guidelines
- Power Isolation: Power down the host industrial computer and disconnect main power supply leads prior to opening the chassis enclosure.
- ESD Protection: Attach an anti-static wrist strap connected to chassis ground before handling the 1784-PCIC circuit board.
- PCI Slot Installation: Seat the card firmly into an available 32-bit PCI expansion slot on the motherboard and secure the mounting bracket screw to ensure frame grounding.
- Coaxial Cabling: Connect RG-6 quad-shield coaxial ControlNet taps to the BNC jacks on the card bracket, observing strict network topology segment length limits.
- Driver Configuration: Install RSLinx Classic or FactoryTalk drivers to assign the target node address and initialize network token pass communication.
Allen-Bradley 1784-PCIC ControlNet PCI Communication Card
Allen-Bradley 1784-PCIC ControlNet PCI Communication Card
The Allen-Bradley 1784-PCIC, also cataloged as the 1784-PCIC ControlNet PCI Communication Card, operates as a dedicated hardware component for deterministic network interface bridging and peer-to-peer data interchange within ControlNet communication systems. Installed into a standard PCI host slot, the card enables industrial computers,SoftLogix controllers, and workstation platforms to send VNet messages, program PLC-5 processors, and execute real-time I/O control over coaxial ControlNet media.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1784-PCIC |
| Brand | Allen-Bradley |
| Origin | USA |
| Weight | 0.40 lbs (0.18 kg) |
| Dimensions | Standard PCI Half-Length Expansion Card |
| Operating Temp | 0 to 60 deg C |
| Power Consumption | 5 VDC at 700 mA (3.5 W via PCI bus) |
| Bus Interface | Universal PCI Bus (32-bit, 3.3V / 5V signaling) |
| Network Protocol | ControlNet (VNet messaging, PLC-5 messaging) |
| Physical Connectors | Dual BNC Coaxial Connectors (Channel A / B redundant) |
| Network Speed | 5 Mbps deterministic token-passing bus |
| Product Series | 1784 Communication Interface Series |
Backplane Bus & Deterministic Network Integration
The 1784-PCIC interfaces directly with the host computer's local PCI expansion bus, exchanging control packets with lower CPU overhead during cyclical I/O updates. Operating as an active node on the 5 Mbps ControlNet token ring, the card manages Scheduled and Unscheduled messaging tasks without interrupting host application execution. Built-in onboard memory and physical layer controllers preserve firmware flash compatibility and maintain stable backplane bus communication velocity across control workstation reboots.
Frequently Asked Questions
Q: What are the primary power requirements provided to the 1784-PCIC card?
A: The module draws power directly from the host motherboard PCI slot, requiring 5 VDC at 700 mA maximum current load.
Q: Can the 1784-PCIC card support dual redundant ControlNet coaxial media connections?
A: Yes, the card features two front-panel BNC connectors (Channel A and Channel B) designed for automatic medium redundancy on dual-cable ControlNet physical media.
Field Installation Guidelines
- Power Isolation: Power down the host industrial computer and disconnect main power supply leads prior to opening the chassis enclosure.
- ESD Protection: Attach an anti-static wrist strap connected to chassis ground before handling the 1784-PCIC circuit board.
- PCI Slot Installation: Seat the card firmly into an available 32-bit PCI expansion slot on the motherboard and secure the mounting bracket screw to ensure frame grounding.
- Coaxial Cabling: Connect RG-6 quad-shield coaxial ControlNet taps to the BNC jacks on the card bracket, observing strict network topology segment length limits.
- Driver Configuration: Install RSLinx Classic or FactoryTalk drivers to assign the target node address and initialize network token pass communication.
