Editing Programmable logic controller (section)

=== Single-board computers ===
Very complex process control, such as those used in the chemical industry, may require algorithms and performance beyond the capability of even high-performance PLCs. Very high-speed or precision controls may also require customized solutions; for example, aircraft flight controls. [[Single-board computer]]s using semi-customized or fully proprietary hardware may be chosen for very demanding control applications where the high development and maintenance cost can be supported. "Soft PLCs" running on desktop-type computers can interface with industrial I/O hardware while executing programs within a version of commercial operating systems adapted for process control needs.<ref name="McMillan 1999" />

The rising popularity of [[Single-board computer|single board computers]] has also had an influence on the development of PLCs. Traditional PLCs are generally [[closed platform]]s, but some newer PLCs (e.g. groov EPIC from [[Opto 22]], ctrlX from [[Bosch Rexroth]], PFC200 from [[WAGO Kontakttechnik|Wago]], PLCnext from [[Phoenix Contact]], and Revolution Pi from Kunbus) provide the features of traditional PLCs on an [[open platform]].