Product Details
The Honeywell CPO-PC400, also cataloged as the CPO-PC400 Plant Controller, operates as a dedicated hardware component for multi-protocol field communication, data processing, and physical execution within ComfortPoint Open automation platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | CPO-PC400 |
| Brand | Honeywell |
| Origin | USA |
| Operating Temp | 0 deg C to 50 deg C |
| Power Consumption | Max. 26 VA (19-29 VAC) / Max. 12 W (19-29 VDC) / Max. 35 VA with MMI |
| Processor Architecture | Dual-core ARM Cortex-A9 (800 MHz) + Cortex-M4 (227 MHz) |
| Onboard Memory | 768 KB FRAM / 1 GB DDR3L RAM / 4 GB eMMC Flash Storage |
| Operating System | Linux / RTOS dual OS execution |
| Communication Ports | 4x RS485 ports, 2x Ethernet ports (10/100 Mbps), 1x MMI, 1x Micro USB, 1x USB-A |
| Protocol Support | BACnet MS/TP, Modbus RTU |
FOUNDATION Fieldbus Connectivity and Channel-to-Channel Isolation
Engineered for high-density field integration across Honeywell control topologies, the unit incorporates dedicated hardware communication coprocessors alongside dual ARM cores to manage deterministic packet transfers. Galvanic channel-to-channel isolation on the four RS485 physical interfaces prevents ground potential loops from corrupting BACnet MS/TP and Modbus RTU bus signals. Direct physical path isolation protects central processor memory banks (FRAM and eMMC) against transient electrical noise, voltage spikes, and common-mode line disturbances present across extended field wiring networks.
Frequently Asked Questions
Q: What power input voltage range does the CPO-PC400 accept?
A: The controller accepts either 19-29 VAC (50/60 Hz) or 19-29 VDC input power.
Q: How is memory retained during complete primary power loss?
A: Non-volatile configuration data and dynamic variables are held in 768 KB FRAM, retaining parameters indefinitely without requiring battery backup power.
Q: What physical interfaces are available for field bus integration?
A: The hardware provides four independent RS485 ports for BACnet MS/TP or Modbus RTU serial links, along with dual 10/100 Mbps Ethernet ports.
Field Installation Guidelines
- Mount the controller vertically or horizontally on a standard DIN rail inside a protective electrical enclosure.
- Verify that input supply wiring matches the 19-29 VAC or 19-29 VDC specification before energizing the unit.
- Terminate RS485 field trunks with 120 ohm end-of-line resistors at the physical boundaries of each serial channel.
- Connect a dedicated chassis grounding cable to the protective earth (PE) bus to establish noise mitigation across communication interfaces.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Understanding Root Causes of Unplanned PLC Stop Mode in Industrial Automation
Modern Programmable Logic Controllers manage execution through distinct operational states: Run, Stop, Start-Up, and Hold. During power-up, a controller initializes memory registers within Stop mode before briefly transitioning to Start-Up mode. During this phase, internal self-diagnostics evaluate system integrity across hardware and user programs. If the controller detects no critical faults, it enters Run mode to execute the control program continuously. However, any severe system anomaly forces the CPU back into Stop mode immediately to prevent erratic machine behavior across the plant floor.
Human-Machine Interface Design: Essential Guide to HMI Selection, Visualization, and Control System Integration
Human-Machine Interfaces (HMIs) serve as the primary operational window into complex industrial automation systems. Modern HMIs convert raw machine data into clear graphical displays, enabling operators to oversee entire manufacturing processes in real time. Instead of relying on physical control panels full of hardwired switches, engineers program interactive screens using intuitive graphics, dynamic color coding, and responsive touch interfaces. Over my 15 years in control systems engineering, I have observed HMIs transform from basic display screens into sophisticated command centers that drive operational efficiency across DCS and PLC environments.
Understanding Safety Relays in Industrial Automation: Architecture, Operation, and Functional Safety
Standard electromechanical relays provide basic electrical isolation between low-voltage control circuits and high-power output loads. A traditional switching relay features a magnetic coil driving mechanical Common (COM), Normally-Open (NO), and Normally-Closed (NC) contacts. However, standard relays pose severe functional risks when deployed in critical safety interlock circuits. High current inrush or mechanical wear can weld contacts together permanently. If contact welding occurs in an emergency stop circuit, pressing the button fails to halt hazardous machinery movements. Consequently, global functional safety standards prohibit standard relays for critical machine guarding functions.