Description
About us: EMERSON PMC PROFINET
Quality policy: quality assurance, reputation first
Service philosophy: make customer product manufacturing easier
Business philosophy: market-oriented, customer-oriented, superb technology, value sharing
The company always adheres to the business philosophy of “integrity, efficiency, win-win and innovation” and serves every new and old customer with the attitude of “integrity service, customer first”. With competitive product prices, huge inventory, excellent quality, fast delivery time, pre-sale consultation and after-sales service, the company continues to provide customers with more and better products
Our leading brands: Allen Bradley, abb, abb Bailey, Foxboro, Rockwell ICs Triplex, Rockwell Triple, gefanuc, Ge, Prosoft, Ryan Rebel, Bently Nevada, Emerson, Ovation, Honeywell, Woodward, Moore, Motorola, Motorola, Black Horse, hima, National Instruments, American Instruments, etc
*The warranty period of all spare parts is 1 year and has passed the test and certification.
*If you need to order more than one product, please contact us and we can offer you a discount.
*We only provide spare parts through SF Express.
*If you find that other suppliers offer lower prices for the same products, we are also willing to offer you further discounts based on their prices.
If you have any other questions, please feel free to contact us.
In the input sampling stage, the PLC reads in all the input states and data in turn by scanning and stores them in the corresponding units in the I/O image area. After the input sampling is completed, the user program execution and output refresh phase are transferred. In these two stages, even if the input state and data change, the state and data of the corresponding unit in the I/O image area will not change. Therefore, if the input is a pulse signal, the width of the pulse signal must be greater than one scanning cycle to ensure that the input can be read in any case.
In the execution phase of the user program, the PLC always scans the user program (ladder) in order from top to bottom. When scanning each ladder diagram, the control circuit composed of each contact on the left side of the ladder diagram is always scanned first, and the control circuit composed of contacts is logically operated in the order of left to right, up to down, and then the status of the corresponding bit of the logic coil in the system RAM storage area is refreshed according to the result of the logic operation; Or refresh the status of the corresponding bit of the output coil in the I/O image area; Or determine whether to execute the special function instructions specified in the ladder. That is, in the process of user program execution, only the state and data of the input point in the I/O image area will not change, while the state and data of other output points and software devices in the I/O image area or the system RAM storage area may change, and the program execution results of the ladder diagram listed above will affect the ladder diagram that uses these coils or data listed below; On the contrary, the status or data of the refreshed logic coil in the ladder diagram below can only work on the program above it until the next scan cycle.
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!
