Today you will learn how to convert a basic wiring diagram to a ladder logic PLC program. This can be a very handy skill to learn, especially if you are converting a machine to PLC control. Upgrading a machine to PLC control may seem like a daunting task. However, if you take your ...
When I first get a datasheet that I’m not familiar with, I try to read the warnings. I know firsthand how hard it is to address the consequences of the warnings later instead of avoiding the problems using the warnings. Reading and following the warnings will usually result in a success...
}// Custom Function - readColor()intreadColor(){// Setting red filtered photodiodes to be readdigitalWrite(S2,LOW);digitalWrite(S3,LOW);// Reading the output frequencyfrequency =pulseIn(sensorOut,LOW);intR = frequency;// Printing the value on the serial monitorSerial.print("R= ");//printing...
we can notice at that time the two output signals have opposite values. Vice versa, if the encoder is rotating counter clockwise, the output signals have equal values. So considering this, we can easily program our controller to read the encoder position and the rotation direction...
If you want to know how to design and configure a relay driver stage using a transistor, you can read it in the following post: How to make a transistor relay driver circuit A Typical Chinese Make Relay PinOuts How to Wire Relay Terminals ...
int chk = DHT.read11(DHT11_PIN); delay(1000); } To see an example of using the DHT11 sensor outputs as variables in other functions, check out our articleHow to Set Up an Ultrasonic Range Finder on an Arduino, where we use theDHT.humidityandDHT.temperaturevariables in a formula that...
ATEL ONU includes a variety of models, according to the access way ,it is divided into two fiber access and one fiber access type two kinds, and all parameters such as input optical power and output RF level etc can be read from web or OLT. ...
You can read more about this device in a previous article called “Field devices and signals used for LV SCADA operations”. This real-time value is transferred to PLC (See Figure 6) and compared to the required level value defined by the operator. Based on the difference between these two...