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@@ -210,7 +210,7 @@ $ws_worker->onMessage = function($connection, $data)
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// modbus crc 16 校验码计算
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function crc16($string) {
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$crc = 0xFFFF;
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- for ($x = 0; $x < strlen ($string); $x++) {
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+ for ($x = 0; $x < strlen($string); $x++) {
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$crc = $crc ^ ord($string[$x]);
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for ($y = 0; $y < 8; $y++) {
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if (($crc & 0x0001) == 0x0001) {
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