Description
The PLC originally developed and produced by EMERSON PR6423/002-041 is mainly used to replace the traditional control device composed of relay contactor, but their operation modes are different:
The relay control device adopts the hard logic parallel operation mode, that is, if the coil of the relay is powered on or powered off, all contacts of the relay (including its normally open or normally closed contacts) will immediately act simultaneously at any position of the relay control line.
The CPU of PLC adopts the operation mode of sequential logic scanning user program, that is, if an output coil or logic coil is connected or disconnected, all contacts of the coil (including its normally open or normally closed contacts) will not act immediately, and will not act until the contact is scanned.
In order to eliminate the difference between the two due to different operation modes, considering that the action time of various contacts of the relay control device is generally more than 100ms, while the time of PLC scanning the user program is generally less than 100ms, PLC adopts a different operation mode from ordinary microcomputer-scanning technology. In this way, there is no difference between the processing results of PLC and relay control device in the case of low I/O response requirements.
Shanxi Runsheng Import and Export Co., Ltd. has strong strength, complete equipment, complete detection means, reliable quality and superior performance. Because our company adheres to the principle of “all for the sake of users”, adheres to strict delivery deadline, reasonable price standard, excellent product quality, and proper after-sales service, and has long-term sincere and effective cooperation with new and old users, reflecting reliable performance and distinctive advantages, and is trusted and welcomed by the majority of users.
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Why are many of our products more competitive in price?
(1) Source procurement to reduce the price difference in intermediate links
(2) Stable channel and more secure supply
Delivery date
(1) The goods in stock can be shipped on the same day after the contract payment is signed
(2) Ordered products are delivered according to the quoted delivery date
Shanxi Runsheng adheres to the enterprise concept of “improving the value of spare parts supply chain”,
The purchase process of spare parts is simple, and it can be delivered to the site in a timely manner to help users reduce the risk of downtime caused by the shortage of spare parts
The emergency spare parts support service is complete, and the spare parts can be customized by the user. The quality of the spare parts is reliable. All the spare parts provided enjoy a one-year extra-long warranty
Spot inventory, fast response speed, reduce user capital investment, improve spare parts utilization rate, spare parts replacement!
All prices listed on the official website are subject to confirmation by contact: Wu Jiedong (manager).
Our product: brand new original packaging
Our warranty: All new or repaired parts have a 12 month warranty period beginning
Our payment: 100% telegraphic transfer of inventory items before shipment, conditions can be proposed!
If you have any downtime spare parts that you cannot find, please feel free to call or use email to contact me. If there are issues that the product cannot solve, please contact me. Product prices can be negotiated. Please do not consider contacting me!
