<pre>readMultipleRegisters: START
Connected
Packet: c8630000000600033000000a
Send
Wait data ... 
Wait data ... 
Wait data ... 
Wait data ... 
Wait data ... 
Wait data ... 
Wait data ... 
Wait data ... 
Wait data ... 
Wait data ... 
Wait data ... 
Wait data ... 
Wait data ... 
Wait data ... 
</pre>Exception: Watchdog time expired [ 5 sec]!!! Connection to 192.192.15.51 is not established. in /var/www/html/laravel_test/app/Tool/phpmodbus/Phpmodbus/ModbusMaster.php:160
Stack trace:
#0 /var/www/html/laravel_test/app/Tool/phpmodbus/Phpmodbus/ModbusMaster.php(436): ModbusMaster->rec()
#1 /var/www/html/laravel_test/app/Tool/phpmodbus/examples/example_datatype.php(11): ModbusMaster->readMultipleRegisters(0, 12288, 10)
#2 {main}