Introduce the clock module of Siemens S7 200 CPU224.

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Siemens S7-200 is a PLC, programmable controller. CPU224 is the core frequency.

PLC is a programmable logic controller, which refers to a new type of industrial control device based on computer technology. In 1987, the International Electrical Commission (IEC) issued a draft PLC standard that defined PLC as follows:

PLC English full name programmable logic controller, Chinese full name programmable logic controller, definition: a digital operation of electronic system, designed for industrial environment applications. It uses a class of programmable memory to store programs inside it, execute user-oriented instructions such as logic operations, sequence control, timing, counting and arithmetic operations, and control various types of machinery or production processes through digital or analog inputs and outputs.

PLC is a programmable logic circuit, and it is also a language that is very closely combined with hardware, and has a very important application in semiconductors

A PLC is an electronic device designed for digital operation in an industrial environment. It uses programmable memory to store instructions for performing operations such as logical operations, sequential operations, timing, counting and arithmetic operations, and can control various types of machinery or production processes through digital or analog inputs and outputs. Both the PLC and its related peripherals should be designed according to the principle that it is easy to form a whole with the industrial control system and easily expand its functions.

The International Electrotechnical Commission (IEC) defines PLC in its standards as:

A programmable logic controller is an electronic system for digital operation designed for use in industrial environments.

It uses a class of programmable memory for storing programs inside it to perform logical operations, sequence control, timing, counting, and arithmetic operations.

User-oriented instructions and control of various types of machinery or production processes via digital or analog inputs and outputs. Programmable logic controllers and.

Its external equipment is designed according to the principle that it is easy to integrate with the industrial control system as a whole and easily expand its functions. 」

This machine comes with 40 input and output points.

Expand the expansion capacity of 7 expansion racks.

Introduction to Siemens CPU226.

CPU 226 is equipped with:

Integrated 2 V Encoder Load Power Supply:

For direct connection of sensors and encoders. With an output current of 400 mA, it can also be used as a load power supply.

2 models: with a variety of power supplies and control voltages.

Built-in digital input and output:

24 inputs and 16 outputs.

2 communication interfaces:

It can be used as a PPI interface for programming functions, HMI functions (TD 200, OP), internal CPU communication (KBPS) for the S7-200, or as an MPI slave for data exchange with the MPI master (S7-300 -400, OP, TD, push button board).

User-programmable interface (FreePort) with interrupt capability for serial data exchange with non-Siemens devices, e.g. with a PC PPI cable as an RS 232 RS 485 adapter at baud rates of Kbit S under the ASCII protocol.

Expansion Bus: Connect the expansion module (only 22x series expansion modules can be used).

Interrupt Input: Extremely high-speed response to the rising or falling edge of the process signal.

High-speed counter:

6 high-speed counters (30 kHz) with parameter-configurable enable and reset inputs, with 2 separate inputs that can be used as increment and decrease counters at the same time; Alternatively, 2 incremental encoders with a 90° phase contrast pulse train (4x20 kHz) can be connected.

High-speed counter: HC

The high-speed counter counts high-speed events, which is independent of the CPU's scan cycle. The high-speed counter has a 32-bit signed integer count value.

or the current value). To access the value in the high-speed counter, you should give the address of the high-speed counter, which is the memory type (hc) plus the count.

Instrument number (e.g., hc0). The current value of the high-speed counter is read-only data and can only be addressed as a double word (32 bit).