I use the analog module of Delta PLC, the signal of the sensor is 4-20mA standard signal, I received by PLC module is 0-20mA, how do I deal with, I consider a method, calculate the 4mA value of PLC is lower than this value, the value of the case, only, don't know I hope you handle this situation, the exchange, thank you
This is not difficult. 1. determine the coefficient: (32000-6400) the physical quantity represented by /20mA, draw the numerical quantity of unit physical quantity in PLC, and use real number to do. 2. (*-6400) / factor = actual quantity of physical quantity, using real number to do. The * here is the D value of the A-D, such as the AIW value of the SIEMENS PLC.PLC:PLC, commonly known as power line access, is called Power Line Communication in English, mainly means of transmitting data and voice signals by means of power lines. PLC's full English name is Power Line Communication, that is, power line communication. By making use of power lines as the communication carrier, so PLC has great convenience, as long as in any room where power outlet, no dialing, high-speed Internet access can immediately enjoy 4.5~45Mbps, to browse the web, call, and watch the movie in the line, so as to realize the collection of data, voice and video. And power in one of the "four nets"! In addition, the home phone, television, audio, refrigerators and other appliances connected by PLC, centralized control, to achieve the "smart home" dream. At present, PLC is mainly used as an access technology, providing broadband network "last mile" solution, applicable to Yu Jumin District, schools, hotels, office buildings and other fields.
You set the maximum range of 4-20mA in PLC, assuming that 100, then 4mA corresponds to 0, 0 Ma corresponding to -25
More trouble, you are completely different standard equipment, ha ha, I haven't done it!
