• Core Function: Provides Modbus RTU (RS-485) interface to connect ControlEdge C300 controllers with remote I/O devices, smart sensors, and actuators; enables bidirectional data exchange for distributed process monitoring and control.
• Key Specs: Supports Modbus RTU protocol, 2-wire RS-485 interface, 9600-115200 bps baud rate, 24V DC power input, -40°C to +70°C operating temperature, SIL 2 certified.
CC-MCAR01: Product OverviewThe CC-MCAR01 is a serial communication adapter designed for integration into Honeywell’s ControlEdge™ C300 distributed control system (DCS). It serves as a bridge between C300 controllers and remote devices using the Modbus RTU protocol, facilitating reliable data exchange in distributed industrial applications. Its primary role is to convert controller commands into Modbus RTU telegrams for field devices (e.g., remote I/O modules, smart transmitters, valve positioners) and translate device responses back into controller-readable data, eliminating the need for proprietary gateways in mixed-vendor environments.Functionally, the adapter supports 2-wire RS-485 communication, handling up to 32 connected devices per port with addressable polling. It processes Modbus function codes (e.g., 03 Read Holding Registers, 06 Write Single Register) to enable read/write access to device parameters, status flags, and diagnostic data. As part of the ControlEdge C300 family, the CC-MCAR01 integrates with the platform’s high-speed I/O link, hot-swappable architecture, and unified engineering tools (ControlEdge Builder), simplifying configuration and maintenance. This design aligns with applications requiring compliance to IEC 61508 (SIL 2) and adherence to Modbus RTU standards (EIA-485), making it suitable for industries like oil & gas, water treatment, and manufacturing where distributed sensing and actuation are critical.
Honeywell CC-MCAR01
CC-MCAR01: Technical Specifications
• Model Number: CC-MCAR01
• Manufacturer: Honeywell
• Product Type: Serial Communication Adapter
• Communication Protocol: Modbus RTU (master/slave mode)
• Certifications: SIL 2 (IEC 61508), CE, UL, ATEX Zone 2 (optional)
• Dimensions: 25mm x 128mm x 115mm (width x height x depth, fits C300 I/O slot)
• Weight: 0.19kg
• Diagnostics: Communication status (tx/rx), parity error, device timeout, port fault
• Hot Swap Support: Yes (plug-and-play replacement without system shutdown)
Honeywell CC-MCAR01
Core Features & Customer ValueModbus RTU Compatibility for Seamless Integration: The CC-MCAR01 natively supports Modbus RTU, the industry-standard protocol for serial device communication. For engineers, this eliminates the need for protocol converters when integrating third-party devices (e.g., Schneider Electric sensors, Siemens remote I/O), reducing system complexity and integration time by 30%. For example, in a water treatment plant, the adapter connects a C300 controller to 16 Modbus RTU pH transmitters, enabling centralized monitoring without custom code.Galvanic Isolation Prevents Signal Corruption: With 1500VAC isolation between the RS-485 port and C300 bus, the module protects against ground loops and EMI from industrial equipment (e.g., variable frequency drives, motors). In a chemical plant’s remote pump station, this ensures reliable data transmission despite nearby agitator noise, preventing false readings that could trigger unnecessary shutdowns.Hot-Swappable Design Minimizes Downtime: The adapter can be replaced while the system remains powered, critical for continuous processes like oil pipeline monitoring. Technicians simply remove the faulty unit and insert a new one; the C300 controller automatically re-establishes communication via I/O link. This avoids scheduled shutdowns for maintenance, saving thousands in lost production per incident.Comprehensive Diagnostics Streamline Troubleshooting: Built-in diagnostics monitor communication status (transmission/reception), parity errors, device timeouts, and port faults. Faults are reported to the C300 controller via I/O link, with LED indicators on the faceplate for quick visual identification. For maintenance teams, this reduces troubleshooting time from hours to minutes—e.g., identifying a disconnected sensor in a remote wellhead without dispatching a crew.SIL 2 Certification for Safety-Critical Applications: When integrated into a Honeywell Safety Manager SIS, the CC-MCAR01 meets SIL 2 requirements (IEC 61508), enabling its use in safety functions like remote emergency stop monitoring. Its fault-tolerant design (hardware fault tolerance ≥1) ensures communication reliability in safety interlocks, aligning with audit requirements for regulated industries.Typical ApplicationsThe CC-MCAR01 is deployed in distributed systems requiring Modbus RTU communication with ControlEdge C300 controllers. In a petroleum refinery’s remote tank farm, it connects the C300 controller to 12 Modbus RTU level transmitters and 8 valve positioners. The adapter’s 115200 bps baud rate ensures real-time updates of tank inventories, while SIL 2 certification supports overfill protection interlocks.At a municipal wastewater treatment plant, the module interfaces with 16 Modbus RTU dissolved oxygen sensors and 4 pump status transmitters across oxidation ditches. Its -40°C cold-start capability supports outdoor installations, and hot-swap capability allows maintenance during rain events without service disruption.In a food processing plant’s distributed refrigeration system, the CC-MCAR01 links the C300 controller to 8 Modbus RTU temperature sensors in cold storage units. Diagnostics alert staff to a sensor communication timeout before product spoilage occurs, ensuring compliance with FDA temperature regulations.
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