Input Output Module works

plc digital output (hereinafter referred to as modules), for switching bus system fire radio systems and fire radio broadcasts normally between. Output module is embedded microprocessor, microprocessor and fire alarm controller communications, power bus brownout detect, input and output line fault detection, output control, digital input module signal logic state judge, the status indicator control. Module after receiving the fire alarm control start command, pull the relay, the scene shifted from the normal speakers to fire radio broadcasts, and light indicator, while the answer signal information to the fire alarm controller, indicating that the switch was successful

Modules include what kinds of

 plc module should include IO modules (analog and digital input and output modules), cpu module, communications module, the general PLC does not require power modules, such as S7-200, while others require a power supply module PLC, such as S7-300 . According to the actual needs of the PLC module combination, such as CPU + DIC) + AI (analog input) + DO (digital output) + AO (analog output) + CP (communication module), if necessary, together with the PS (power supply module) basically able to achieve the desired purpose.

plc IO module

Interface PLC and the electrical circuit is output through the input section (I / O) to complete. plc IO module integrates the PLC's I / O circuit, the input register reflecting the input signal, the output point to reflect the state of the output latch. Input module into the electric signal into a digital signal the PLC system, the opposite output module. I / O into the digital input (DI), switching plc analog input output module, the analog input (AI), analog output (AO) modules.

Programmable Logic Controller (PLC) hardware measures:

The main modules are used large-scale or large scale integrated circuits, a large number of switching operations performed by non-contact electronic memory, plc IO module system design have improved the channel protection and signal conditioning circuit.
① shield - to power transformers, CPU, programmers and other major components, the use of electrical conductivity, magnetic shielding material good, to prevent outside interference.
② filter - the power supply system and an input line filter in various forms, such as intelligent plc or π-type filter network to eliminate or suppress high frequency interference, but also weakened the interaction between the various modules.
③ power adjustment and protection - the core components of the microprocessor needed a + 5V supply, the use of multi-stage filter and make adjustments with the integrated voltage regulator to adapt to fluctuations in the exchange and over-grid voltage, under influence of voltage.
④ isolation - between the microprocessor and I / O circuits, opto-isolated, effectively isolate the electrical connection between the I / O interface with the CPU contact, reducing failures and malfunctions; between the I / O port also isolated from each other.
⑤ with modular structure - This structure helps in case of failure to repair short. Once identified a faulty module can easily be replaced quickly, allowing the system to resume normal work; also helps to accelerate find the cause of the fault.

cpu module has several models

NA200plus, is a set of three 16-point type cpu module. Three models were CPUplus-1601, CPUplus-1602 and CPUplus-1601N. New Plc logic controllers fully meet the functional requirements of the mechanical industry users, in the case of small volume only conventional CPU 1/4, still have high-speed counting, speed pulse and other advanced features, at the same time carefully for the ease of use of the service user, reflecting Nanda proud extension of the R & D team carved, excellence rigor; the high cost to the customer selection process more "conscious" of demanding to leave the choice.
, Plus fully reflects our pursuit of value for money concept. Please keep in mind, plus does not mean increasingly greater volume, price has become increasingly more expensive; but in a small volume can be increased more performance, low price better add value. We gave up minir named, because we need to have more product content, product customers can bring more imagination. Named plus, well reflect our intentions. I believe and plus mini contrast, can give our customers even more impressed.

Large programmable control system

Our large-scale control system can be adapted to the needs of the most demanding application projects. They provide a modular architecture and a variety of I / O and networking options. These powerful control solutions for all areas, including processing, security and sports, including providing world-class capabilities. Our large-scale programmable automation controller (PAC) and programmable logic controllers (digital output plc) designed for distributed control applications or host project design, with excellent reliability and performance.

Basic PLC operation

Process control can be simple and to what extent? We have a common household space heater.
Heater member sealed in a container, ease of system communications. This concept can be extended to a remote control home thermostat heater, communication distance of a few meters, usually voltage control.
Now, we are in this small, simple process control system to be expanded on the basis of which the control and configure a plant need?
Long-distance transmission line impedance, EMI and RFI voltage control scheme makes implementation very difficult, in this case, the current loop is a simple and effective solution. Kirchhoff's law by the current loop current loop at any point is equal to all other points in the current, which can offset the impact of the transmission line impedance. Because the loop impedance and bandwidth (a few hundred ohms and "100Hz), EMI and RFI spurious pickup issues are minimized. plc analog input output module system is useful for properly controlling such a factory production system.