Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[2.4] - 2021-12-26

Added

support for double (64bit double precision floating point) data type to API. This requires PHP 7.2+ as it uses https://www.php.net/manual/en/function.pack.php E and e formats.

[2.3.1] - 2021-12-05

Added

Use PHP 8.1 in CI flow.
examples/index.php now supports FC3 and FC4 requests.

Fixed

From PHP 8.1 Types::parseAsciiStringFromRegister() fails to convert extended ASCII (8bit) characters to UTF-8. Introduced Charset::$defaultCharset to be able to set default charset used to convert strings.

[2.3.0] - 2021-05-09

Added

Allow high level API setting custom endian for string address with ReadRegistersBuilder and StringReadRegisterAddress classes.

[2.2.0] - 2021-05-04

Added

Allow high level API setting custom endian for each address with ReadRegistersBuilder and ReadRegisterAddress classes.

[2.1.1] - 2021-01-26

Fixed

BinaryStreamConnection endless loop (CPU @ 100%) when stream is ready for reading but stream returns no data at all (#73)

Added

Example for Modbus server examples/example_response_server.php

Changed

Changed examples to use Packet::isCompleteLength()

[2.1.0] - 2020-10-04

Added

Added functions to check is received data is complete/error Modbus TCP packet (PR #63)
- Packet::isCompleteLength
- ErrorResponse::is

Changed

Changed StreamHandler to read data until complete packet is received. Previously we read only once from stream and naively assumed that Modbus TCP packet can not be fragmented over multiple TCP packets/ multiple stream reads. This fixed #61.

[2.0.1] - 2020-04-12

Security

Escape stty command for SerialStreamCreator to avoid unescaped arguments (#54)

[2.0.0] - 2020-04-07

Added

Added high level API to compose Coil (fc1/2) requests. See:
- ModbusTcpClient\Composer\Read\ReadCoilsBuilder
- ModbusTcpClient\Composer\Write\WriteCoilsBuilder
Added 'serial' protocol support to BinaryStreamConnection. See examples/rtu_usb_to_serial_stream.php how to use it.
Added example to read modbus RTU from Usb to rs-485 adapter and SHT20 sensor (#50)
Adds Function 23 (0x17) Read/Write Multiple registers support (#47)
Started changelog

Changed

Adds request time on example request page
(BREAKING change) abstract class ModbusTcpClient\Composer\Address changed to interface