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
Category: plc program
Siemens S7-200plc how to create or add your own library in the block
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
Siemens 224XP how to modify the baud rate
I use PC / PPI CABLE Cable CPU baud rate is 187.5k,Again, I use the PC / PPI CABLE cable communications when it is not connected to the CPU And prompts lower baud rate, how to modify the CPU 9.6K baud rateA: The cable does not support the baud rate of 187.5KThe solution1, find a … Continue reading Siemens 224XP how to modify the baud rate
Step7 – Operation
1，forced Forced steps:a, PLC - Display Force Values;b, the CPU right, Insert New Object - Variable Table, opened a variable table in the variable table using the menu Variable - Display Force Values. forced to use: Open the forced variable window, enter the forced address,In Force Value set in the actual situation 1 or 0, then … Continue reading Step7 – Operation
Siemens PLC operating system update method
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
When s7200plc running, how writer
1, System blocks ------ Properties - "increases the storage area ---" No run mode edit to increase the storage area No tick .2, After the connection PLC, the Debug menu ---- under "RUN (run) mode editing program.
Can not download the program
When you write the Siemens program, the first to compile, Then to download. If the compiler is wrong, the programming software will prompt below.
How to solve the Siemens PLC’s power LED is not light
1, check if the terminal screw loose or disconnected wires; 2, replace the power module. 3, check the external power supply is normal;
How can I delete STEP7 hardware catalog third party DP slave?
If S7-300/400 master station with STEP 7 configuration PROFIBUS network. To configure the third-party DP slave, you need to install the GSD file. You can see it in the Hardware Catalog window after installation. To delete STEP7 hardware catalog third party DP slave, first install the "S7DATA" in STEP7 folder> GSD file "GSD" subfolder deleted installation. … Continue reading How can I delete STEP7 hardware catalog third party DP slave?
How to change the IP address of the S7-1200?
After entering the device configuration Select the corresponding PLC network view in the directory in the right-hand side, Added to the network view, Click the PLC network interface, The following attributes, Ethernet address (DP network, then on display DP network address), Click the Ethernet address (DP network, then on display DP network address), In "IP … Continue reading How to change the IP address of the S7-1200?
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