Delta PLC maintenance knowledge introduction

1. Delta PLC power-on running light is not on, ERROR flickers, the possible cause is: no program

2. Delta PLC can not communicate with the computer, which may be: RS23 is bad

3. If the power indicator of Delta PLC is off, the power supply is bad

4 Delta PLC needs to send pulse should select the output transistor type PLC

5. Delta PLC output indicator light on, but no output: output point is broken

6. Delta PLC input cable is normal, the input terminal is closed, but the input indicator is off: the input point is bad

8. Power on Delta PLC BAT.LOW on: The battery is low

10. Delta PLC power-on burning power supply insurance: short circuit of the power board

11. All indicators of Delta PLC are normal, and all output points cannot operate: output expansion IC is broken

12. All the indicators of Delta PLC are normal, and the input contacts do not respond: RS232 is broken

13 Delta PLC simulation quantity has what control mode: temperature, liquid level

14 Delta PLC external communication port: RS232, RS485

15. Delta PLC voltage drops to the lower limit of voltage how to do: timely replacement

16. Delta PLC running light is not on, program input is normal, running switch has been closed, what is the reason: CPU bad

17. Delta PLC has 24V output but the power indicator is off: +5V power circuit is abnormal

18. Which Delta PLC can not be extended: DVP-EC3

19. Is Delta weighing module extended on the left side or the right side? Left side

20. The output pulse of DVP20PM00M can reach: 500HZ