1. downloadIf you have successfully run the STEP 7-Micro/WIN32 PC and PLC communication have been established between, you can download the compiled program to the PLC. If you already have the PLC will be overwritten. Download procedure is as follows:(1) before downloading PLC must be in the "stop" way of working. Check the mode indicator … Continue reading Siemens PLC’s how to upload and download programming

Symbol table of the Siemens S7-200PLC is the variable name, it is no exaggeration to say, every person using S7-200 should be familiar with it, if you laugh at it that he never used it can also do a good job, then you're not a real programmer.Using the symbol table, a program more readable, the … Continue reading Siemens PLC programming using the symbol table

1. the establishment of project(1) open an existing project file.Common methods are as follows:² using the menu command "file" → "open" in the "open file" dialog box, select the path and name of the project, click "OK" to open an existing project.² in "file" menu listed at the bottom of the recent work of the … Continue reading Mitsubishi PLC ladder program Input

Mitsubishi PLC software is widely used, many of them software I was using for the first time, such as AD/DA/SC, and so on, but they are useful for Q-Series, FX series still have the original instructions, such as DA/AD, use only FROM and TO. Below is the programming controller software introduced by Mitsubishi.Mitsubishi PLC programming … Continue reading Mitsubishi PLC programming software

90 's of the last century to the practicality of the fieldbus control system is a rapid momentum of rapid development, is currently the world's most modern control systems. Fieldbus control system is a focus in automation technology, is growing by domestic and foreign manufacturers of automation equipment and user attention. The appearance of fieldbus … Continue reading FCS, DCS, PLC control system Characteristics and differences

FCS is the spot bus control technology, which is the same thing.FCS was developed by PLC of, while in other industries, developed by DCS and FCS come from, so between PLC and DCS and FCS are inextricably linked, and there is a profound difference.FCS was developed from DCS and PLC, and FCS not only has … Continue reading Fieldbus DCS, and FCS

1. FB har en baggrund luns, FC har ikke en baggrund luns. Dette er den mest afgørende forskel.Baggrund datablokke styres hver af en privat butik, som om kontrolleret personlig værdiboks i banken. Temp er mere end FB, FC blev opkrævet med en fælles dataområde, ligesom opslagstavler, alle kan underskrive en bekendtgørelse, sendt meddelelser vil blive … Continue reading S7-300/400 plc the difference between FC and FB

Hardware and software methods by listening, analyzing internal PLC inherent PPI protocol, then the host computer using VB programming, follow the PPI protocol, data reading and writing PLC, man-machine operation tasks. This communication method, compared with the general freedom of communication protocols, omitted through the PLC programming, just the preparation of the PC communication program … Continue reading S7-200PLC the PPI protocol