siemens programmable logic controller(PLC)

Overview
S7-200 series in the distribution automation system to fully exercise its power. Coverage from the alternative use of a simple relay control to more sophisticated automatic control. Application of an extremely broad field, covering all with automatic detection, automatic control of the industrial and civilian fields, including a variety of machine tools, machinery, electrical facilities, civilian facilities, environmental protection equipment and so on. Such as: punching machine, grinding machine, printing machinery, rubber chemical machinery, central air conditioning, elevator control, motion systems
S7-200 series of excellent performance in the following areas:
* Extremely high reliability
* A very rich instruction set
* Easy to master
* Convenient operation
* Extensive built-in integration capabilities
* Real-time characteristics
* Strong communications capabilities
* A wealth of expansion module
 

CPU Unit Design
The integrated 24V load power supply: can be directly connected to the sensors and transmitters (actuators), CPU 221,222 with a 180mA output, CPU 224, CPU 226 respectively, output 280,400 mA. Can be used as load power supply.

Different device types
CPU 221 ~ 226 each of two kinds of types of CPU, with a different power supply voltage and control voltage.

Local Digital Input / Output Points
CPU 221 has a 6 input points and four output points, CPU 222 with 8 input points and six output points, CPU 224 has 14 input points and 10 output points. CPU 226 with 24 input points and 16 output points.

Interrupt Input
Allowed to fast pace of the process of the rising edge of the signal to respond.

High-speed counter
CPU 221/222
4 high-speed counter (30KHz), programmable and has reset input, 2 separate inputs simultaneously to add, subtract, count, can be connected to two 90 ° phase shift of the A / B phase incremental encoder
CPU224/226
6 high-speed counter (30KHz), with the CPU221/222 the same functionality.
CPU 222/224/226
Can be easily used digital and analog expansion modules allow for expansion. Can use the emulator (optional) on this machine input signal simulation for debugging user program.

Analog Potentiometer
CPU221/222 1 Ge
CPU224/226 2 Ge
CPU221/222/224/226 also has

Pulse
2-way high-frequency pulse output (maximum 20KHz), is used to control stepper motors or servo motor to achieve positioning tasks.

Real-Time Clock
For example, filling time stamp for the information, record the machine running time or time control of the process.

EEPROM memory module (optional)
Modify the procedure can be used as quick with the copy tool (no programmer), and can carry out the work of supporting software archive.

Battery Module
Data back-up for a long time. User data (such as the flag state, the data blocks, timers, counters) can be an internal super-capacitor storage of about 5 days. Optional battery module will extend the storage time to 200 days (10 years life). Battery module plugged into the card slot in the memory modules.

S7-200 series PLC to provide four different basic models of eight kinds of CPU for your use.
CPU 221
Native integrated 6 input / 4 output of a total of 10 digital I / O points.
No I / O expansion capability. 6K bytes of program and data storage space.
Four independent 30kHz high-speed counter, 2-way separate high-speed pulse output 20kHz.
An RS485 communication / programming port, with the PPI protocol, MPI communication protocol and free way communication capabilities.
Is very suitable for small-point control of micro-controller.

CPU 222
The machine integrates 8 inputs / 6 outputs a total of 14 digital I / O points.
Can be connected to two expansion modules, the largest amount extended to 78-channel digital I / O points or 10 analog I / O points.
6K bytes of program and data storage space.
Four independent 30kHz high-speed counter, 2-way independent 20kHz high-speed pulse output, with a PID controller.
An RS485 communication / programming port, with the PPI protocol, MPI communication protocol and free way communication capabilities.
Is a scalable, adaptive wider range of full-function controller.

CPU 224
The machine integrates 14 input / 10 output a total of 24 digital I / O points.
7 expansion modules can be connected to the largest road be extended to 168 digital I / O points or 35 analog I / O points.
13K bytes of program and data storage space.
6 independent high-speed counters 30kHz, 20kHz independent 2-way high-speed pulse output, with a PID controller.
An RS485 communication / programming port, with the PPI protocol, MPI communication protocol and free way communication capabilities.
I / O terminal rows can easily be demolished as a whole. Is a strong control of the controller.

CPU 226
The machine integrates 24 input / 16 output a total of 40 digital I / O points.
7 expansion modules can be connected to the largest road be extended to 248 digital I / O points or 35 analog I / O points.
13K bytes of program and data storage space.
6 independent high-speed counters 30kHz, 20kHz independent 2-way high-speed pulse output, with a PID controller.
2 RS485 communication / programming port, with the PPI protocol, MPI communication protocol and free way communication capabilities.
I / O terminal rows can easily be demolished as a whole.