Let’s take it is having Start/Stop switch (I0.0) and two outputs (Q0.0, Q0.1) where laser light pulse coming out alternatively to cut the object with 1s delay until the process gets stopped. In most of the cutting/slicing processing systems, industries are using PLC controllers because of their guarantee of precise and stable cutting. Let’s try to understand the instruction in ladder logic with the example, Example: If the current RLO state is “1” and the previous state was “0” the RLO bit will be “1” after this instruction. When the signal on line 92 from the counter 74 changes to a zero state, the shift register 76 is switched to its serial output mode, and the contents of the. It is equipped with waterproof sensor probe. NEG compares the signal state of address 1 with a signal state from the previous scan, which is stored in address 2. When the soil moisture level reach the module setting values(adjustable) it will output low level and analog signal. If the current RLO state is “1” and the previous state was “0” (detection of rising edge), the RLO bit will be “1” after this instruction. POS compares the signal state of address 1 with the signal state from the previous scan, which stored in address 2. The RLO prior to the instruction is stored in the memory address Address Positive edge Detection: It detects the falling edge signal change in the address from 1 to 0 and displays it as RLO as 1 after the instruction. The RLO prior to the instruction is stored in the memory address. It detects the rising edge signal change in the address from 0 to 1 and displays it as RLO as 1 after the instruction. Block Description Positive RLO edge detection:
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |