Mitsubishi PLC FX1N: basic unit (24/40/60) with relay or transistor outputUp to 128 points can be extended to a maximum 100kHz built-in 2-way high-speed pulse output function (transistor output type). Special function modules can be connected to FX2N series Expansion board with a variety of functions for useMitsubishi PLC FX1S: basic unit (10/14/20/30) with relay … Continue reading Mitsubishi PLC, FX1S and FX1N difference in functionality

In an FC where monitoring occurs when the statements are not being processedWhen other FC monitoring are normal, you can connect, ask why?A: PLC online, the state appears the statements are not being processed?Indicates that some statements have not been processed. This execution logic of your program about:There compare, branch, some of the statements will … Continue reading When PLC online, the state appears the statements are not being processed?

When the PLC user program to be retained in RAM Battery will be used ,Batteries typically 3V or 3.6V non-rechargeable lithium batteries,Battery life is usually about five years ,Battery with a long ,Voltage will drop,When it fell to the data is insufficient to guarantee the RAM ,The program RAM is lost . If the user … Continue reading Siemens PLC battery replacement method

Siemens PLC high-speed counter preset value can be set to zero, the purpose you want to use based on the high-speed counter.every one has a 32-bit high-speed counter current value and a 32-bit preset value,Current and preset values ​​are unsigned integer value.All counter modes are supported by the current value equal to preset interrupt,The use … Continue reading Siemens PLC high-speed counter preset value can be zero right?

How to Siemens S7-300 at 8:08:08 on August 8, 2013 by STL how to convert ASCII, preferably with FC in the form of call, multi-thank you!Here is my answer:The STEP7 time with BCD code, BCD code can be regarded as a special decimal number, you can use TI_S7 library FC95 HTA to convert.The following program … Continue reading How will the time converted to ASCII code?

1, RS485 serial communication    Most third-party device support , Siemens S7 PLC by selecting the free port communication mode control serial communication. In the simplest case only send information to the third party equipment , such as printers or the transmission frequency instruction (XMT). In either case , must be achieved through the S7 … Continue reading Siemens PLC serial communication method

Users can put their programming is integrated into the programming software Micro / WIN is. This allows calls to achieve the same function library instruction in programming, rather than several projects simultaneously open file copy. Command library can also be easily passed among multiple programming computers.New library steps:1 : Micro / WIN's File (File) menu, … Continue reading Siemens S7-200plc how to create or add your own library in the block

Creating the operating system update with STEP7 cards steps:1 Download CPU file.2 Double-click the filename to extract the files3 Perform "File/S7 Memory Card / Delete" command in the SIMATIC Manager, delete the micro memory card.4 Select "PLC / Update Operating System" Programming operating system in the SIMATIC Manager, then select the destination directory and open … Continue reading Siemens PLC operating system update method