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1. Regarding the configuration of ET200 IS (Y-LINK): The configuration of ET200IS is different from that of ET200M; it requires a software package (.gsd/.gse files), and once this software is installed, it’s ready to use. Open the hardware configuration, go to OPTION -> INSTALL NEW GSE, and install it there. Different models require different software. For ET200IS—IM157, this file is Sir8045e.gsd. Then, from OPTIONS to Update Catalog, refresh the model types in the catalog. You can then find the I/O model type you need in the Hardware Catalog list on the right side. Finally, carry out the hardware configuration; the configured Y-LINK is shown in the figure below. 2. PCS7 time synchronization issue: For a stand-alone system, it is sufficient to set the time for the upper and lower levels to be the same. If it is a Server and a Client, time synchronization becomes an issue in this case. If there are multiple servers, there are two options: A. Synchronize with one specific server; if that server fails, it becomes impossible to synchronize the time. In other words, when you specify synchronization with a particular PC, if there are problems, it won’t be able to find the clock master. B. If no specific server is designated, I specify synchronization with all servers. When one server has a problem, the other servers can automatically take over as the clock master. There are three steps involved: (1) Hardware → CPU → Diag/Clock. The slaves in the PLC can be set to either SLAVE or MASTER mode; the choice depends on what was defined earlier. (2). Activate CP443-1; activate Simatic synchronization. (3) OS hardware: For CP1613, check the Time of day option. (4). Settings in WINCC: Open Time Synchronization and check the corresponding items. The servers are redundant; both are MASTER, distinguished by order. The one that starts first becomes the clock MASTER, while the other becomes the SLAVE. For time synchronization between master and slave stations, another method can be used, namely time synchronization via PROFIBUS; however, this approach requires PCS7 version 5.0 or higher. First, the direction of time message delivery must be set in the communication card. In the CPU properties, set the master station as AS MASTER and the slave station as AS SLAVE. Settings for the upper level: Turn on Time Synchronization, and select cp5613-5614(profibus)/scp in Logic device. For the settings in Set PC/PG: 3. Paper break signal processing at Weimide Paper Mill: To facilitate statistics, it is necessary to record the number of paper breaks that occur within a certain time period, the instantaneous time at which each paper break occurs, the time it takes for the system to recover from such breaks, as well as the duration of each paper break. First, we need to read the system time. The SFC1(READ_CLK) block is the read time block. In this block, MD30 is used to read the time. Based on your needs, it can read out the real value corresponding to the instantaneous time at any point you desire. Then, the real number needs to be converted into hours:minutes:seconds format. That completes the first step. Secondly, in accordance with the requirements of the process and actual operations, as well as one’s own conditions, it is used to read out the time at a specified point. For the statistics of the number of finger amputations, choose an accumulation method based on your actual needs: add from 0 upwards (S-CU), or subtract from a higher value downwards (S-CD).