CONTROLLING FOOD PROCESSING WITH PLC AND HMI CONTROL SYSTEM

PLC as Popular control in industrial

PLC is most popular module to control process in industry, because they have some advantages : simple to programing, module packaging, easy to improve, least wiring, cimplyfied modification, and other advantages.

The PLC Micro and Nano have various communications options to meet your control needs. Each unit has an RS-232 port that can be used for SNP Slave, Modbus RTU Slave or Serial In/Out commands. The second port on the 23 point and 28 point micro is an RS-485port that supports SNP Slave, SNP Master, Modbus RTU Slave and Serial In/Out commands. Modems can easily be attached to either port. With the Serial I/O commands you can interface to devices such as pagers, intelligent scales, bar code readers and printers. Serial I/O can be used to Serial Port Applications

cause of that PLC used to control almost equipment. with HMI progam, PLC interfaced with human with easy way. HMI and PLC comunicated to monitoring status and controlling.

As a controlling, PLC used analog and digital input or outpu. for exsample analog input used for controlling and monitoring temperature using thermocouple and it's module . Thermocouple sent electronic signal then Thermocontrol sent signal 4-20 mA to PLC. PLC will translate it's signal and convert it into digital signal. MMI will get signal from PLC and translate it ioto Uhman interface. so people can easy control ang monitor Temperature status and control it using PID control system.

Food processing need specific handling and controlling all aof the process. starting from milk reception until packaging product.