| Part XXX. MODBUS | ||
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Part XXX. MODBUS
Copyright © 2014 eCosCentric Limited
![[Important]](pix/important.png) | Important |
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This eCosPro-MODBUS package is STRICTLY LICENSED FOR INTERNAL EVALUATION AND TESTING PURPOSES ONLY for a maximum period of THREE months from the initial delivery of your eCosPro release. It may not be used for production purposes nor redistributed in full or in part in any format, including source code, binary code and object code format. Shipment of prototypes, hardware or products containing the package in any format is STRICTLY PROHIBITED. A separate COMMERCIAL LICENSE for this package from eCosCentric is required to receive technical support for the package as well as permit distribution of binary forms of this package. Some releases of eCosPro may not include evaluation copies of this package. In this case, please contact eCosCentric for licensing and availability. You must obtain written permission from eCosCentric to exceed the evaluation period. |
Table of Contents
- 109. MODBUS overview
- 110. Configuration
- 111. API Overview
- 111.1. Application API
- cyg_modbus_server_start — Start MODBUS server
- cyg_modbus_server_stop — Stop MODBUS server
- 111.2. Backend API
- cyg_modbus_response — Provide MODBUS response
- cyg_modbus_raw_pdu — Access raw PDU buffer
- cyg_modbus_response_nocopy — Provide MODBUS response (no copy)
- cyg_modbus_response_exception — Provide MODBUS exception response
- cyg_modbus_get_uid — Read “Unit ID” of request
- 111.3. ModbusTCP specific API
- cyg_modbus_acm_add — Add client address to Access Control Mechanism pool
- cyg_modbus_acm_remove — Remove ACM registered client address
- 111.4. MODBUS Exceptions
- 111.5. Backend Interface
- cyg_mbop_read_discrete_inputs — Read discrete inputs
- cyg_mbop_read_coils — Read coils
- cyg_mbop_write_single_coil — Write single coil
- cyg_mbop_write_multiple_coils — Write multiple coils
- cyg_mbop_read_input_regs — Read input registers
- cyg_mbop_read_holding_regs — Read holding registers
- cyg_mbop_write_single_reg — Write single holding register
- cyg_mbop_write_multiple_regs — Write multiple holding registers
- cyg_mbop_rw_multiple_regs — Read and/or write multiple holding registers
- cyg_mbop_mask_reg — Mask holding register
- cyg_mbop_read_fifo_queue — Read FIFO contents
- cyg_mbop_read_file_record — Read file records
- cyg_mbop_write_file_record — Write file records
- cyg_mbop_read_id — Return specific extended device ID
- cyg_mbop_canopen — Perform CANOPEN operation
- 111.6. Example backend
- 112. Internals
- 113. Debug and Test
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| Chapter 108. Debug and Test |  | Chapter 109. MODBUS overview |
| 2025-10-02 | eCosPro Non-Commercial Public License |