As PLCs became more advanced, methods were developed to change the sequence of ladder execution, and subroutines were implemented.[22] This enhanced programming could be used to save scan time for high-speed processes; for example, parts of the program used only for setting up the machine could be segregated from those parts required to operate at higher speed. Newer PLCs now have the option to run the logic program synchronously with the IO scanning. This means that IO is updated in the background and the logic reads and writes values as required during the logic scanning.
Special-purpose I/O modules may be used where the scan time of the PLC is too long to allow predictable performance. Precision timing modules, or counter modules for use with shaft encoders
B&R X20CP1381 Product description: Description: The X20CP1584 CPU is based on an ATOMâ„¢ processor clocked at 0.6 GHz and equipped with 256 MB DDR2 SDRAM. USB, Ethernet, POWERLINK and removable CompactFlash are all included as standard features. A Gigabit Ethernet interface is ...
Founded in 1979, B&R Industrial Automation GmbH., has its R&D and production headquarters in Eggelsberg As a manufacturer of automation In July 2017, the company was acquired by the Swiss ABB Group ...