Regul bus is bi-directional and can be installed as a dual ring with the stable delivery of data between CPU modules and I/O modules. The latter are configurable with strategies in case of complete loss of communication, allowing proper and timed shutdown of the equipment.
Additional system stability is provided with the dual synchronization channels, dual SCADA connections, dual or multiple power supplies per rack.

CPU modules in the controllers execute application in parallel, reducing time required to process inputs and write outputs. The design of the Regul R500 and R600 controllers was done in a way that delivers a switchover within 1-2 application cycles.

Regul controllers have support for Modbus RTU and Modbus TCP protocols, as well as for the IEC 61870-101 and 61870-104 for the power industry (R500 and R600 only).

Protocols to communicate with servers and SCADA systems, promoted by OPC Foundation. Certified compliance for Regul R500 in the Baden-Württemberg laboratory of the Foundation.

Configuration and programming of all the Regul controllers is made with the Epsilon LD software, provided and supported free of charge. The software supports visual representation of the rack configuration and supports all five IEC 61131-3 languages (LD, ST, FBD, IL, SFC) and CFC.

CPU module in every series of the Regul controllers carry an integrated GPS / Glonass receivers to have correct and independent synchronization of the internal clock. Time server runs inside the CPU module with the actual time stamping inside the I/O modules.

In some cases, an external monitor must be connected directly to the PLC to monitor the data on it. And a keyboard with a printer can be used without installing an additional HMI. There is also an option of CPU modules to come with pre-installed Web server. HMI for the Web server is prepared in the Epsilon LD software and accessed via a web browser.