<pre>readWriteRegisters: START
Connected
Packet: 1b0b00000017001730000006300000060c000afc1807d0000000004040
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 ... 
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(1079): ModbusMaster->rec()
#1 /var/www/html/laravel_test/vendor/adduc/phpmodbus/examples/example_fc23.php(14): ModbusMaster->readWriteRegisters(0, 12288, 6, 12288, Array, Array)
#2 {main}