Skip to main content

How to choose single chip microcomputer or PLC in the field of industrial control

 Choosing between a single chip microcomputer and a PLC for industrial control applications depends on a number of factors, including the complexity of the control system, the required level of reliability and robustness, the cost constraints, and the required speed and accuracy of control.

Here are some general guidelines to consider:


  1. Control system complexity: If the control system is relatively simple, with a limited number of inputs and outputs and basic logic requirements, a single chip microcomputer may be sufficient. However, if the control system is complex, with a large number of inputs and outputs, complex logic requirements, and the need for real-time operation, a PLC may be a better choice.
  2. Reliability and robustness: PLCs are designed for industrial control applications and are built to withstand harsh environments, including temperature extremes, humidity, and electrical noise. Single chip microcomputers may not be as robust and may not be able to withstand the same level of environmental stress.
  3. Cost: Single chip microcomputers are generally less expensive than PLCs, particularly for low-end applications. However, as the complexity and robustness requirements increase, the cost of the microcomputer may approach or exceed that of a PLC.
  4. Speed and accuracy: If fast and accurate control is required, a PLC may be a better choice, as they are designed for real-time operation and have specialized hardware and software to ensure fast and accurate control. Single chip microcomputers may be slower and may not be optimized for real-time operation.
  5. Scalability: If the control system is expected to expand or change in the future, a PLC may be a better choice as they are designed to be scalable and can easily be expanded by adding additional modules or processors. Single chip microcomputers may require significant redesigns or additional hardware to accommodate expansion.
  6. Development time: Single chip microcomputers may require more development time and effort to implement, as they require software development and may need custom hardware design. PLCs, on the other hand, often have pre-built software libraries and can be quickly programmed using standard industrial control programming languages.
  7. Support and maintenance: PLCs often have established support channels and maintenance plans, which can be beneficial for industrial control applications where downtime can be costly. Single chip microcomputers may not have the same level of support and maintenance options.
  8. Industry standards: If the control system needs to meet specific industry standards, such as safety or regulatory compliance, a PLC may be a better choice as they are often designed to meet these standards. Single chip microcomputers may require additional hardware or software modifications to meet these standards.

Ultimately, the choice between a single chip microcomputer and a PLC will depend on the specific needs of the industrial control application, including the required level of complexity, reliability, speed, scalability, and support.


Labels:

Comments

Post a Comment

Popular posts from this blog

PLC Program for Mixing Tank

 Create a ladder diagram for controlling a batch mixing process. Implement a PLC program for mixing tank or Mixing Process using PLC Ladder Logic. PLC Program for Mixing Tank Fig : Mixing tank A tank is used to mix two liquids. The required control circuit operates as follows: A. When the START button is pressed, solenoids A and B energize. This permits the two liquids to begin filling the tank. B. When the tank is filled, the float switch trips. This de-energizes solenoids A and B and starts the motor used to mix the liquids together. C. The motor is permitted to run for 1 minute. After 1 minute has elapsed, the motor turns off and solenoid C energizes to drain the tank. D. When the tank is empty, the float switch de- energizes solenoid C. E. A STOP button can be used to stop the process at any point. F. If the motor becomes overloaded, the action of the entire circuit will stop. G. Once the circuit has been energized, it will continue to operate until it is manually stopped. Solution : A
1 comment
Read more

What is Relay? How it Works? Types, Applications, Testing

 We use relays for a wide range of applications such as home automation, cars and bikes (automobiles), industrial applications, DIY Projects, test and measurement equipment, and many more. But what is Relay? How a Relay Works? What are the Applications of Relays? Let us explore more about relays in this guide. What is a Relay? A Relay is a simple electromechanical switch. While we use normal switches to close or open a circuit manually, a Relay is also a switch that connects or disconnects two circuits. But instead of a manual operation, a relay uses an electrical signal to control an electromagnet, which in turn connects or disconnects another circuit. Relays can be of different types like electromechanical, solid state. Electromechanical relays are frequently used. Let us see the internal parts of this relay before knowing about it working. Although many different types of relay were present, their working is same. Every electromechanical relay consists of an consists of an Electroma
1 comment
Read more

Chlorine dioxide Analyzer Principle

 Chlorine dioxide measurement Chlorine dioxide (ClO2) is an instable, non-storable, toxic gas with a characteristic scent. The molecule consists of one chlorine atom and two oxygen atoms – represented in the chemical formula ClO2. It is very reactive. To avoid the risk of spontaneous explosions of gaseous chlorine dioxide or concentrated solutions, it is generally handled in dilution with low concentrations. ClO2 is soluble in water, but tends to evaporate quickly. Typically it is prepared on site, for example from hydrochloric acid and sodium chlorite. The procedure provides solutions with approx. 2 g/l ClO2 that can be safely handled and stored for several days. Image Credits : krohne Sensor Parts : Reference electrode Applied chlorine dioxide specific potential Current needed to maintain the constant potential Counter electrode Measuring electrode The disinfection effect of ClO2 is due to the transfer of oxygen instead of chlorine, so that no chlorinated byproducts are formed. ClO2
5 comments
Read more