HCMC03MC-0B B & R Automation
Wake Industrial LLC is not an authorized distributor of this product.
The HCMC03MC-0B is a PLC module from B & R Automation and is part of the HCM Maestro PLC Modules series. It has a 33 MHz clock frequency, 10 MB of DRAM memory, and features both RS232/TTY and RS232/RS485 serial interfaces. The module includes 1 MB of Flash PROM and supports a 32-bit DRAM bus width.
Internal Product Review
The HCMC03MC-0B is a well-designed HCM Maestro PLC module from B & R Automation with a 33 MHz clock frequency and 10 MByte DRAM memory. OS-9/68030 operation and a 32-bit DRAM bus width support steady processing and efficient data handling in control applications. RS232/TTY and RS232/RS485 connectivity add strong value for legacy system integration.
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Product Description:
The HCMC03MC-0B is a processor card manufactured by B&R Automation within the HCM Maestro PLC Modules series. Installed in a rack beside local I/O and motion cards, this unit supplies the execution engine for programmable logic control, handling sequencing, arithmetic, and intermodule messaging. By hosting the user application and coordinating field-level communication, it turns the modular Maestro platform into a complete cell controller suited for packaging lines, assembly stations, and general machine automation.
At the heart of the board is a CPU clocked at 33 MHz, a frequency that supports instruction processing and influences scan time. System memory bandwidth is sustained by a 32-bit DRAM bus, allowing code retrieval and data exchange without wait states during most cycles. Volatile storage totals 10 MB of DRAM, providing space for motion paths, recipe data, and temporary variables generated during operation. Nonvolatile program retention is provided by 1 MB of flash PROM, ensuring the application image remains available after power loss. A dedicated memory management unit segments the address space, allowing the real-time kernel to isolate user tasks and detect illegal memory access. This separation reduces the chance that an application error will interrupt every process running on the controller.
System services are supplied by the OS-9/68030 microkernel, an operating system that offers preemptive multitasking and deterministic scheduling for consistent logic scans. Removable storage and application transfer are supported through the integrated PCMCIA interface, providing a direct method for loading programs or transferring recipe files. For serial networking, the board provides RS-232/TTY and RS-232/RS-485 ports, supporting point-to-point diagnostics and multidrop bus links to intelligent drives. Fast access to frequently used data is handled by 0.5 MB of SRAM, which stores critical variables that require shorter access times than bulk DRAM can provide. The available serial connections also accommodate peripheral devices that use established industrial communication standards. Its operating system coordinates concurrent control tasks so time-sensitive processes can run alongside communication and data-handling functions.
