AO modules of DDC intelligent hardware

Abstract

The invention provides AO modules of DDC intelligent hardware. The AO modules are multiple modules varied in the number of AO. The multiple AO modules can be connected with multiple CPU modules and directly connected with I / O of the microprocessor MCU on the PCU modules via monitoring point interfaces. Multiple I / O of the microprocessor MCU can be connected with four monitoring points of analog quantity input AI, digital quantity input DI, analog quantity output AO and digital quantity output DO via the monitoring point interfaces or connected with any three or two or one of the four monitoring points. The power supply 1 interfaces and the power supply 2 interfaces on the multiple AO modules and the multiple power supply interfaces on the multiple CPU modules, multiple analog quantity input AI modules, multiple digital quantity input DI modules, multiple analog quantity output DO modules and arbitrary combinations of the four monitoring points are identical in specification and power supply polarity sequence arrangement. The beneficial effects of the AO modules of DDC intelligent hardware are that work hours and material of each link of purchasing, production, sales, assembling, installation, operation and maintenance can be greatly saved, the requirement for operator skills can be reduced, transformation of the monitoring points is convenient and application is flexible and practical.

Description

technical field [0001] The invention relates to an AO module of DDC intelligent hardware, which is commonly used in the processing of analog quantity output AO of system control of environment and equipment. Background technique [0002] Most of the existing DDC controllers have an integrated structure, such as figure 1 , 2 As shown, the monitoring points (ie AI / DI / AO / DO) and the microprocessor (MCU) are on the same PCB, and the number of each monitoring point is mostly fixed; some are connected to the monitoring points through the communication interface , which results in more programming addresses in the CPU module, a large amount of programs, and cumbersome programming. Also, the technology in ZL200910245186.6 cannot be promoted because of the large space occupied by a single monitoring point. Most of the existing DDCs have no man-machine interface or intelligent interface, such as Siemens Climatix product series, general series RWD68, RWD68 / CN, Honeywell UB local con...

AI Technical Summary

Problems solved by technology

[0002] Most of the existing DDC controllers have an integrated structure, such as figure 1 , 2 As shown, the monitoring points (ie AI / DI / AO / DO) and the microprocessor (MCU) are on the same PCB, and the number of each monitoring point is mostly fixed; some are connected to the monitoring points through the communication interface , which results in more programming addresses in the CPU module, a large amount of programs, and cumbersome programming

Also, the technology in ZL200910245186.6 cannot be promoted because of the large space occupied by a single monitoring point

Most of the existing DDCs have no man-machine interface or intelligent interface, such as Siemens Climatix product series, general series RWD68, RWD68 / CN, Honeywell UB local controller UB1211CH, UB2204CH, UB2221CH, UB4334SCH, Honeywell Excel 800 General-purpose controllers and Johnson FEC DDC controllers. Therefore, the existing DDC controllers in the market consume a lot of man-hours and materials in the actual application process, and have high professional requirements for personnel, so it is not easy to standardize

Images