writeSingleRegister: START

exception 'Exception' with message 'socket_connect() failed.
Reason: ()Operation now in progress' in /var/www/html/Modbus/Phpmodbus08/Phpmodbus/ModbusMaster.php:108 Stack trace: #0 /var/www/html/Modbus/Phpmodbus08/Phpmodbus/ModbusMaster.php(736): ModbusMaster->connect() #1 /var/www/html/Modbus/Phpmodbus08/examples/example_fc6.php(15): ModbusMaster->writeSingleRegister(0, 2, Array, Array) #2 {main}