IEC−60870−5 application layer for an open and flexible remote unit

Abstract

This paper presents the development and test of the standard IEC-60870-5 application layer protocol for a Remote Terminal Unit (RTU) based on open hardware and software. The RTU hardware is an embedded system, a SoC-type design using FPGA that has been programmed with the open core LEO with Linux operating system running over it, so both the hardware and IOS are open source. For prototyping the GR-XC3S-1500 board has been used. There is no open source code available for the IEC standard protocols, so application layer protocol has to be implemented. All the software design has been made in a PC platform using standard development tools. The source code generated for the protocol has been compiled with the standard Linux gcc compiler in LEO . Several tests have been made to prove the right behavior of the protocol as well as its performance over different transmission mediums.

Control Networks and Smart Grid Teleprotection: Key Aspects, Technologies, Protocols, and Case-Studies

“…However, NG-SDH and PDH networks have high Operational Expenditure (OPEX). In addition, the demand for packet technologies is increasing significantly, according to the same reference, such as devices based on IEC 60870 and IEC 61850 remote control (data acquisition and supervision control) standards [153], [187], [188].…”

The IEC-60870-5 standard for a personal server applied to telemedicine

“…The GPS is a GARMIN, " The open source implementation and test of the IEC 60870-5 data link layer protocol, described in IEC 60870-5-2, and the IEC 60870 -5-5. application layer, are presented in [10] and [11]. As justified in [9] when the transmission channel is half-duplex, RF, it is necessary to use a protocol that controls …”

“…Using a faster transmission technology, GSM or serial cable, allows increasing the number of retries to higher values, although the protocol performance is also reduced there are more completed polls, and the information received is more accurate. The results of these tests are presented in detailed at [11].…”

Open Development Platform for Embedded Systems

“…In one the CC and RTU were PCs and in the other the RTU was LEON. Full details on the application solution implemented and main results were presented in (Medina, 2009). …”