Sea for PLC application in the intelligent ventilation system of internal testing - Industrial control -

C60S2R when it is going to do to catch up with this unit of intelligent ventilation system of the third party test, decided to use the PLC to make a temporary test platform for intelligent ventilation system of internal testing of the unit.

test platform's function is to simulate a long 42 meters, 24 meters wide, the granary of the tier 6 meters, equipped with 5 ventilation window, three vents, four window axial flow fan, three draught fan, a total of 15 ventilation equipment, complete all actions under the control of the intelligent ventilation system ( Use light to simulate the action completion) Information, and return to the intelligent ventilation system equipment. Test platform and intelligent ventilation system after the docking, intelligent ventilation system through its system of grain situation and small stations for grain situation data and meteorological data, and based on comprehensive judgment is enabled, when to enable row of heating ventilation and natural ventilation, cooling and ventilation, such as ventilation mode, in order to realize intelligent ventilation; At the same time, through the test platform to verify the action of ventilation equipment logical relationship in time sequence is correct, to verify that the intelligent ventilation system is normal. Figure 1

. General layout

this is the general layout, is on the left side of the test platform, the right is intelligent ventilation system control section ( For the convenience of test and the attachment, which has been extracted from two distribution box) 。

in figure 2. Sea temporary test platform for C60S2R

this is a test platform, make some hasty and humble.

in figure 3. C60S2R electricity running

using tips: I am a first-time PLC, a beginner. With no experience in this field so some tips may not professional, please do not laugh.

1。 On the load. I, as a newcomer, by looking at some teaching video, and then through the study of programming software online help, quickly understand the sea for the running mechanism of PLC controller and programming method, and through the application examples and sea for technical support, quickly solved some don't understand and doubt, thank you to the sea for the technical support Chen Gong of himself to ask answer patiently.

2。 Programming is convenient. Both simulation and on-line monitoring of programming is very convenient.

3。 Offer some deficiencies, first of all, the simulation can't set breakpoints, observation of the certain moments or process.

4。 C series working temperature is only 0 ~ 55 ℃, it is difficult to use in outdoor related products in the north. Working temperature for - our product requirements 25℃~55℃。 This greatly limits the application range of the PLC.

5。 Communication instruction RCV although initial operators can be defined and the terminator, but can be defined at most 2 bytes, for more than 2 bytes starting operators and end communication protocol ( Our industry of the national standard for the end of the initial character of communication protocol and the regulation of 4 bytes) Is bad; In addition RCV in receiving variable length communication protocol ( Rn=0） After completion of the communication, don't receive the length of the data, gives a practical communication data extraction and analysis difficult.

6。 Communication instruction XMT can only send a fixed-length data, to send the application of variable length data difficult to handle.

technology zone of sea for C10S0T series PLC application in weather stations measuring wind system design for sea PLC application in the intelligent ventilation system internal testing of the sea for the C series PLC controller application in automatic extracted oil palm fruit heater design sea 893 - for the application of PLC controller in machine design DCB series intelligent front-end in the application of the PLC control system
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