HONEYWELL 51401583-100 EPNI 怎么保养 At present, the proportion of the cost of developing system hardware for manufacturers of programmable logic controllers is decreasing year by year, while the proportion of developing software and integration costs is increasing year by year. Today’s software packages integrate programmable controller programming, operator interface, motion control, program debugging, fault diagnosis and processing, and communications. The human-machine interface and monitoring software integrates all open standard interfaces, which can obtain a large amount of real-time data directly from production, analyze and package this data, and then transmit it to the management level, and it can also process optimization data and production details. The parameters are quickly fed back to the control layer and the field, thus paving the way for the integration of the ERP system.
Micro programmable controllers are emerging
Traditional micro programmable logic controllers generally have 8~64 points of digital I/O and 1~4 points of analog I/O. They are small in size and can be directly installed in the machine. However, in addition to the above functions, the current micro-programmable controllers can already be compared with medium and large-scale programmable controllers in terms of network functions and human-machine interface functions. This type of micro-programmable controllers is currently the most developed Fast. The LOGO of Siemens and the PICO of Rockwell Automation are all representatives of this kind of micro programmable controller.
Infiltration of information technology into programmable logic controllers
The penetration of information technology into programmable controllers is to adapt to the development trend of the increasingly organic combination of factory control systems and enterprise information management systems, and to adapt to the control level between programmable controllers of different brands, programmable controllers and distribution. requirements for the efficient exchange of data between control systems. In fact, the realization of multitasking systems, the improvement of network capabilities, and the development of software integration make it easy for information technology to be integrated with programmable logic controller systems.
Strengthen safety technology
With the expansion of the application field of programmable logic controllers, the reliability requirements for programmable logic controller systems are also getting higher and higher, and strengthening the safety technology of programmable logic controllers has also become a new development direction. Fault-proof programmable logic controllers with fault-tolerant and redundant performance have appeared, with online pluggable dual-channel signal modules and power modules. Process controllers with built-in redundant CPU systems have also appeared. Instead of redundant I/O modules, process controllers use internal test circuits to check and diagnose the health of I/O modules. GE Fanuc has launched a three-in-one programmable logic controller, which is currently the only high-reliability and safe programmable logic controller in the world that realizes full-series compatibility, hot backup and three-to-two voting.
