Nature of the PROFIBUS networking system, certain things needs to be taken into account:. The total (Input + Output) I/O size must exceed zero. The Cyclic I/O size for each direction cannot exceed 244 bytes. Acyclic I/O is not supported. Type “cmd” in the Open: text field. When the Command Prompt opens, type “ping 10.10.110.52” where 10.10.110.52 is the IP address of the target device. Press the Enter key. Watch the Command window: there should be responses from the. The MERG CBUS system was developed over 4 years by Mike Bolton and Gil Fuchs and introduced with specifications and an initial range of kits in 2007. Since then the system has been further developed by many MERG members into a very comprehensive Layout Control Bus. The system is intended to simplfy the wiring of a model railway whilst enhancing. PROFIBUS Networks 1 PROFIBUS Networks 2 Topologies of SIMATIC NET PROFIBUS Networks 3 Configuring Networks 4 Passive Components for Electrical Networks 5 RS 485 Repeater 6 Passive Components for Optical Networks Appendix A The SIMATIC NET Optical Link Module (OLM) for PROFIBUS B The SIMATIC NET Optical Plug (OLP) for PROFIBUS C General Information D Installing. Real-time/high performance EtherNet/IP Anybus CompactCom 40-series. The cutting-edge CompactCom 40-series is based on the award-winning Anybus NP40 network processor. It is especially suitable for both general purpose and for high-end EtherNet/IP applications with fast network cycles and synchronization demands. Available in Chip, Brick or Module form factors.
- Menibus Pro 2 2 07 – System Wide Equaliserplugin Hosting Server
- Menibus Pro 2 2 07 – System Wide Equaliserplugin Hosting Software
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There are a variety of sensors to measure temperature in devices such as Arduinoand ESP8266, in this case we have chosen the Sensor DS18B20this particular sensor is not connected through a GPIO Analogue, technically it is a digital sensor that uses the protocol Onewire or 1- Wire designed by dallas semiconductor, There are many tutorials on the net about this protocol.
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Reference:Datasheet DS18B20 Maxim
In this case we have adapted our temperature sensor for fast connections, the sensor, the datasheet of DS18B20Maxim recommends using a resistance of 4.7k
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, but we will use a resistance of 3.3k, but for ease we will use 3 resistors of 10k in parallel, This modification will allow your![System System](https://101audio.com/wp-content/uploads/2019/07/Sonible-SmartEQ-2-Video.jpg)
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modules to work with this sensor without difficulty, with the help of heat shrinkable resistors and wiring.Required Materials
Test
We will use a module ESP8266 12E NodeMCU and the Onewire library, in this case, step by step the methods of sending and requesting sensor data.
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Connections, GND, 5V, GPIO(2) PIN D4
Arduino IDE Code
In this case the code indicates step by step the process of requesting data to the probe, this example can easily be modified for other implementations with onewire, I decided to use this example to understand step by step how the Onewire protocol works. Textual 7 1 4.
- Requires Libreria Onewire.h
2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90 92 94 96 98 100 | OneWire ds(2); // put your setup code here, to run once: } voidtemperature(){ bytepresent=0; bytedata[12]; floatcelsius,fahrenheit; if(!ds.search(addr)){ /// Serial.println(); delay(250); } Serial.println('fallo'); addr[i]; if(OneWire::crc8(addr,7)!=addr[7]){ return; switch(addr[0]){ break; break; // Serial.println(' Chip = DS1822'); break; Serial.println('Device is not a DS18x20 family device.'); return; ds.select(addr); delay(1000); present=ds.reset(); ds.write(0xBE); //Serial.println('Paso 7'); for(i=0;i<9;i++){ } OneWire::crc8(data,8); int16_t raw=(data[1]<<8)|data[0]; raw=raw<<3; raw=(raw&0xFFF0)+12-data[6];} bytecfg=(data[4]&0x60); if(cfg0x00)raw=raw&~7;// 9 bit resolution, 93.75 ms elseif(cfg0x20)raw=raw&~3;// 10 bit res, 187.5 ms elseif(cfg0x40)raw=raw&~1;// 11 bit res, 375 ms celsius=(float)raw/16.0; if(isnan(celsius)){ } Serial.print('Temperature: '); // put your main code here, to run repeatedly: delay(1000); |
Conclusions
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Although it is considered that we simply test the sensor, this tutorial invites to adapt the Sensor and the resistance to facilitate connection in tests, this sensor will be used in a lot of future tests.
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A great advantage of the use of these sensors, since being digital and using a protocol, allows to create a network of sensors to a single input (GPIO).