Author Archives: arco

How to transfer the program from Siemens plc

1, installation, V4.0 STEP 7 MicroWIN programming software. 2, prepare a programming cable for 200PLC, 6ES7 901-0BF00-0AA0 3. After the programming line and the PLC are connected, the PLC is powered on, open the software, and click to set the PC/PG interface in the navigation bar. Select the PPI protocol, then select the USB port […]

Siemens PLC shortcuts

1, beginning with F: F1: Get help. F2: The ladder diagram enters the edit mode. F3: The ladder diagram enters the operation mode. F4: Compile the program. F5: Normally open contact input. F6: Normally closed contact input. F7: Coil output. F8: Function command input. F9: Horizontal line input. 2, Shift related: Shift+F3: The ladder diagram […]

POU in Siemens PLC

POU is the program organization unit. The POU Program Organization Unit (POU) is an important and widely used basic IEC programming unit in the IEC61131-3 standard. The POU consists of three types of basic units: Program, Function Block, and Function.

In Mitsubishi PLC programming, what is the difference between the jump instruction CJ, the subroutine call CALL and the interrupt instruction?

A subroutine helps you to block the program. The instructions used in the main program determine the execution status of the specific subroutine. When the main program calls a subroutine and executes it, the subroutine executes all instructions until the end. The system then returns control to the main program in the calling subroutine network. […]