Module services 

Internal Modbus services. Contains logic for specific function codes (Coils, Registers, etc.) and the core ClientServices orchestration logic.

Modbus Client Services Module

This module provides the core orchestration logic for a Modbus client. It acts as the bridge between the high-level application logic and the low-level transport protocols.

Key Components

• [ClientServices]: The main entry point for sending Modbus requests. It manages transaction state, handles timeouts, and performs automatic retries.
• [ExpectedResponse]: A state tracking mechanism that maps outgoing requests to incoming responses using Transaction IDs (for TCP) or FIFO ordering (for Serial).
• Sub-services: Specialized modules (coils, registers, etc.) that handle the serialization and deserialization of specific Modbus function codes.

Features

• Supports both TCP and Serial (RTU/ASCII) transport types.
• Generic over TRANSPORT and APP traits for maximum flexibility in different environments.
• Fixed-capacity response tracking using heapless for no_std compatibility.

Modules

coil

Modbus Coils Client Services

diagnostic

Modbus Diagnostic Services

discrete_input

Modbus Discrete Input Service

fifo_queue

Modbus FIFO Queue Service

file_record

Modbus File Record Services

register

Modbus Register Service

Structs

ClientServices

Core client services struct that manages the application logic, transport layer, and expected responses for Modbus communication. This is Main entry point for client operations, providing methods to send requests and process responses.

CoilsApi

Feature-scoped coils API facade.

DiagnosticApi

Feature-scoped diagnostics API facade.

DiscreteInputsApi

Feature-scoped discrete-inputs API facade.

FifoApi

Feature-scoped FIFO API facade.

FileRecordsApi

Feature-scoped file-record API facade.

RegistersApi

Feature-scoped registers API facade.

Traits

ClientCommon

A marker trait that aggregates the necessary capabilities for a Modbus client application.

Type Aliases

SerialClientServices

Convenience alias for serial clients where queue size is always one.