<pre>readInputDiscretes: START
Connected
Packet: e30300000006000200000002
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/vendor/adduc/phpmodbus/Phpmodbus/ModbusMaster.php:166
Stack trace:
#0 /var/www/html/laravel_test/vendor/adduc/phpmodbus/Phpmodbus/ModbusMaster.php(349): ModbusMaster->rec()
#1 /var/www/html/laravel_test/vendor/adduc/phpmodbus/examples/example_fc2.php(11): ModbusMaster->readInputDiscretes(0, 0, 2)
#2 {main}