Automation - robot

Articles and code samples created in response to many frequently asked questions about Automation - robot

What is Siemens s7 1200 PLC and where is it used?

Siemens S7-1200 is a programmable automation controller system produced by Siemens. It is designed for small and medium-scale automation applications, particularly in industrial automation, energy management, and production. Compared to earlier versions, the S7-1200 is smaller and more cost-effective. The system comes with Ethernet and Profinet interfaces and supports SIMATIC Ladder Diagram (LAD) and SIMATIC Function Block Diagram (FBD) languages for low-level programming. The S7-1200 comes with multiple input and output modules, which can read various sensors such as analog, digital, and temperature sensors. Additionally, the system offers output modules required to control drives, actuators, and other automation equipment. The S7-1200 comes with various software tools such as Siemens TIA Portal, SIMATIC S7-1200 Advanced Controller and S7-1200 Basic Controller which are designed to facilitate programming, configuration, and system management. Due to its versatile, reliable and cost-effective nature, the Siemens S7-1200 is commonly used in small and medium-scale industrial automation projects.

Engine start stop program using STL language with Siemens S7 1200

For a simple code example to control the motor with the start-stop button using the Siemens S7-1200, the Structured Text (STL) language is as follows:   VAR start_button: BOOL; stop_button: BOOL; motor_relay: BOOL; BEGIN //Read the state of the start button start_button := INPUT.X0; //Read the state of the stop button stop_button := INPUT.X1; //Check if the start button is pressed IF start_button THEN //Turn on the motor motor_relay := TRUE; ELSE //Check if the stop button is pressed IF stop_button THEN //Turn off the motor motor_relay := FALSE; END_IF END_IF //Write the state of the motor relay to the output OUTPUT.X2 := motor_relay; END This program reads the state of the start button (input X0) and the stop button (input X1) and depending on the state of these buttons, it controls the state of the motor relay (output X2). When the start button is pressed, the motor relay is turned on and when the stop button is pressed, the motor relay is turned off.

What is Arduino and what is it used for? What features does Arduino have?

Arduino is an open-source electronics platform. It is designed to make the use of microcontrollers (such as AVR and ARM) and other electronic components easy to use. This platform can be used to work with sensors, actuators, displays, and various other hardware. As an example, to turn on and off an LED using an Arduino, the following code can be used: int ledPin = 13; void setup() { pinMode(ledPin, OUTPUT); } void loop() { digitalWrite(ledPin, HIGH); delay(1000); digitalWrite(ledPin, LOW); delay(1000); } This code defines pin 13 as an output and in the loop, it turns on the LED for 1 second, then turns it off for 1 second.