Hi,
2 hopper scale valves are controlled by a PLC (Siemens).
The plc controls the pneumatic directional control valves and the directional control valves control the opening and closing of the large hopper scale valves. When pressing the test buttons on the touch panel display, the hopper scale valves work perfect. But when the program is running the hopper scale valves do not open or close. The touch panel with the program running is connected to the PLC which operate the DCvalves. What i...
No PLC output to valve when program is running
2 hopper scale valves are controlled by a PLC (Siemens).
The plc controls the pneumatic directional control valves and the directional control valves control the opening and closing of the large hopper scale valves. When pressing the test buttons on the touch panel display, the hopper scale valves work perfect. But when the program is running the hopper scale valves do not open or close. The touch panel with the program running is connected to the PLC which operate the DCvalves. What i...
No PLC output to valve when program is running