Why is there no reaction of the output points of the PLC?

2016-08-17 14:07:25 Xiamen Haiwell Technology Co., Ltd. Read

Firstly,the program running switch should be set to the stop state. Secondly,use the software to monitor on-line and force the output. If the plc output is normal, it means that the output points of PLC are normal, so this problem may be caused by the wrong program, or the output points of PLC are broken.