Mcr To Srm Converter

| Component | MCR-based system | SRM-based system | |-----------|------------------|------------------| | Main contactor coil | 230V AC | Driven by SRM via interposing relay | | Star contactor coil | 230V AC | Driven by SRM (with built-in timer) | | Delta contactor coil | 230V AC | Driven by SRM | | Timing relay | External pneumatic/timer relay | SRM internal timer block | | Interlock | Hardwired NC auxiliary contacts | SRM logic (AND/NOT functions) |

Result: Wiring reduced from ~30 connections to ~12, plus programmable timing adjustments without changing hardware.

5.1 Simple Register Read/Write Mapping

5.2 Streaming Sensor Data

5.3 Error and Status Mapping

5.4 Endianness and Sizing

Variant A – Mass-based SRM: $$SRM_m = \fracT_MCRm_r$$ Where $m_r$ is estimated via:

Variant B – Stress-based SRM (Metric of Material Utilization): $$SRM_\sigma = \frac16 \cdot T_MCR\pi d_shaft^3$$ Where $d_shaft$ is estimated from MCR using standard shaft design stress (e.g., 45 MPa for marine, 85 MPa for aero).

Embedded control systems commonly mix legacy motor control components (exposing Motor Control Registers — MCRs) with newer Sensor Readout Modules (SRMs) that expect different signaling, data formats, and timing. A dedicated converter is needed to bridge these differences without redesigning existing components. This work defines the functional requirements for an MCR-to-SRM converter, evaluates design alternatives, and presents a prototype implemented on an FPGA with accompanying firmware. mcr to srm converter

Contributions:

This paper presents the design, implementation, and evaluation of an MCR-to-SRM (Motor Control Register to Sensor Readout Module) converter that enables interoperability between legacy motor-control register interfaces and modern sensor readout modules. The converter performs protocol translation, data buffering, timing alignment, error detection and recovery, and configuration management to support low-latency, deterministic communication for embedded control systems. We describe hardware and firmware architectures, communication protocols, timing analysis, resource utilization, and experimental results showing successful integration with representative motor controllers and sensor modules.

Project Codename: Sigma-Drive Translator
Report Date: April 25, 2026
Author: Advanced Propulsion Systems Division

Functional goals:

Non-functional goals:

Constraints:

2.1 MCR Interfaces: Describe common MCR implementations — memory-mapped registers, read/write cycles, byte/word widths, endianness, and typical control/status register semantics: enable/disable, speed setpoint, direction, fault status.

2.2 SRM Interfaces: Describe SRM expectations — streaming sensor data, timestamping, frame formats, packetized transfers, typical transports (SPI, I2C, UART, LVDS, Ethernet, CAN), and synchronization needs. | Component | MCR-based system | SRM-based system

2.3 Protocol Converters: Survey converters and bridges (e.g., SPI–I2C bridges, CAN gateways, AXI-to-APB bridges) and relevant techniques: buffering, flow control, DMA, zero-copy, hardware accelerators, and soft CPU integration.