Within the structure of the PLC Mitsubishi facilities.
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| PLC Mitsubishi |
1. Processor (CPU).
Controls were calculated act This is like the brain of the PLC Mitsubishi internal logic circuit and a variety of microprocessor-based (Micro Processor Based) substitutes for such relays. Counter / Time Warner. And sequencer So users can design circuits using Relay Ladder Diagram CPU will not accept data from a variety of input devices. It will then be processed and stored by the program from memory. After sending the appropriate information, right out to the device output.
2. Memory (Memory Unit).
Acting keeping programs and data used in the operation. The size of the memory is divided into bit data (Data Bit) within the memory one bit, it will be the state of logic 0 or 1 vary depending on the order in which PLC Mitsubishi consists of two memory types. ROM and RAM
RAM serves to store user programs and data used in the operation of the PLC Mitsubishi memory type to a small battery. Continue to use the data when the power outage. Reading and writing data into RAM, so it is very easy to use contractors in the trial of the modified program the machine frequently.
ROM maintaining the program for use in the operation of the PLC Mitsubishi by the user's application. Memory ROM can also be categorized as EPROM, which will require special equipment to write and delete programs. For applications that do not want to change the program. It also has an EEPROM memory, this does not require special tools to write and delete programs. Can be used like RAM, but does not require battery backup. But the price is more expensive because it includes the features of the ROM and RAM together.
3. Input - Output (Input-Output Unit)
The unit receives input signals from external devices and converts the signal into an appropriate signal and send it to the processor.
output unit To receive information from the processor and then forwards the data to control external devices such as lamps, motors and control valves and so on.
4. Power Supply (Power Supply).
Acting power and maintain the DC voltage to the CPU Unit, memory and input / output.
5. ACCESSORY (Peripheral Devices).
• PROGRAMMING CONSOLE
• EPROM WRITER
• PRINTER
• GRAPHIC PROGRAMMING
• CRT MONITOR
• HANDHELD
• etc
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