<pre>readCoils: START
Connected
Packet: 8f1a0000000600013000000c
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 ... 
Wait data ... 
</pre>exception 'Exception' with message 'Watchdog time expired [ 5 sec]!!! Connection to 192.192.15.51 is not established.' in /var/www/html/Modbus/Phpmodbus08/Phpmodbus/ModbusMaster.php:166
Stack trace:
#0 /var/www/html/Modbus/Phpmodbus08/Phpmodbus/ModbusMaster.php(234): ModbusMaster->rec()
#1 /var/www/html/Modbus/Phpmodbus08/examples/example_fc1.php(10): ModbusMaster->readCoils(0, 12288, 12)
#2 {main}