代码拉取完成,页面将自动刷新
同步操作将从 不败少龙/modbus-tcp-client 强制同步,此操作会覆盖自 Fork 仓库以来所做的任何修改,且无法恢复!!!
确定后同步将在后台操作,完成时将刷新页面,请耐心等待。
<?php
declare(strict_types=1);
namespace ModbusTcpClient\Packet\ModbusFunction;
use ModbusTcpClient\Packet\ModbusPacket;
use ModbusTcpClient\Packet\StartAddressResponse;
use ModbusTcpClient\Utils\Types;
/**
* Response for Write Single Coil (FC=05)
*
* Data part of packet is always 4 bytes - 2 byte for address and 2 byte for coil status (FF00 = on, 0000 = off).
* For example: coil at address 1 is turned on '\x00\x01\xFF\x00'
* For example: coil at address 10 is turned off '\x00\x0A\x00\x00'
*
* Example packet: \x00\x01\x00\x00\x00\x06\x03\x05\x00\x02\xFF\x00
* \x00\x01 - transaction id
* \x00\x00 - protocol id
* \x00\x06 - number of bytes in the message (PDU = ProtocolDataUnit) to follow
* \x03 - unit id
* \x05 - function code
* \x00\x02 - start address
* \xFF\x00 - coil data (true)
*
*/
class WriteSingleCoilResponse extends StartAddressResponse
{
const ON = 0xFF;
const OFF = 0x0;
/**
* @var bool
*/
private bool $coil;
public function __construct(string $rawData, int $unitId = 0, int $transactionId = null)
{
parent::__construct($rawData, $unitId, $transactionId);
$this->coil = ord($rawData[2]) === self::ON;
}
public function getFunctionCode(): int
{
return ModbusPacket::WRITE_SINGLE_COIL;
}
public function __toString(): string
{
return parent::__toString()
. Types::toByte($this->isCoil() ? self::ON : self::OFF)
. chr(self::OFF);
}
public function isCoil(): bool
{
return $this->coil;
}
protected function getLengthInternal(): int
{
return parent::getLengthInternal() + 2; //coil 1 byte + 1 "unused 0x0 byte"
}
}
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