Eight steps based on PLC control system design

Understanding of the program structure and programming methods, based on the actual preparation of the PLC program. PLC control system design needs to go through the following process.

(A) analysis of the controlled object and put forward the control req

Solenoid valve failure how to rule out

First, the solenoid valve does not work after power Check the power supply connection is not good → re-wiring and connector connection Check the power supply voltage is within the scope of work → → tune the normal range of the coil is not desoldering → re-welding coi

Methanol companies don't catch cold on futures

The methanol futures are tentatively scheduled to be listed on the Zhengzhou Commodity Exchange on October 28, becoming the third new futures product approved this year after lead and coke. According to the announcement of the China Securities Regulatory Commission, the introduction of met