KTC sets out test framework for LS Electric's RAPIEnet protocol
The institute also detailed IEC 62443 and EU Cyber Resilience Act testing at the CPS (OT/ICS) Secure AX Summit 2026 in Seoul.
KTC is developing a test and evaluation framework for RAPIEnet, the industrial Ethernet protocol developed by LS Electric, the institute said at the CPS (OT/ICS) Secure AX Summit 2026 held at El Tower in Yangjae, Seoul, on November 13. The plans were presented by a KTC team leader, according to Daily Secu.
The RAPIEnet tests are divided into three areas: the data link layer, the application layer, and robustness and security. In the data link layer tests, KTC checks whether communication frame formats and individual functions conform to the specification. The test equipment acts as a communication partner, sending and receiving frames and analysing how the device under test responds.
The robustness tests reproduce link disconnection and recovery in a ring network and examine device behaviour under abnormal frames, traffic spikes and long-duration operation. The team leader said KTC developed the data link layer test items with NNSP and LS Electric and plans to prepare a test procedure document covering test conditions, procedures and expected results. NNSP is building the test equipment while KTC organises the test items and procedures.
The team leader predicted that a test and evaluation service could be offered in about two to three years. LS Electric developed RAPIEnet, the protocol now in line for the framework.
Standards for industrial control products
KTC cited IEC 62443-4-1 and 4-2 as the standards for makers of PLCs, HMIs, drives and industrial communication equipment. IEC 62443-4-1 evaluates a manufacturer's secure development process through documents, records and interviews, while 4-2 tests the security functions implemented in the product. Both have been adopted in Korea as Korean Industrial Standards (KS), and KTC provides related accredited testing services.
Manufacturers exporting industrial control products to the EU must also address the Cyber Resilience Act (CRA). The main CRA requirements fully apply from December 11, 2027, while the obligation to report exploited vulnerabilities and significant security incidents has applied since September 11, 2026, requiring an early warning within 24 hours.
Quick answers
What is RAPIEnet?
RAPIEnet is an industrial Ethernet protocol developed by LS Electric. KTC is developing a test and evaluation framework for it.
When do the EU Cyber Resilience Act requirements apply?
The main CRA requirements fully apply from December 11, 2027. The obligation to report exploited vulnerabilities and significant security incidents has applied since September 11, 2026, with an early warning required within 24 hours.
When could a RAPIEnet test and evaluation service be offered?
A KTC team leader predicted it could be offered in about two to three years.