ABB REC 523 Technical Reference Manual

Contents

ABB REC 523 Technical Reference Manual Manual pdf 49 page image

1MRS750881-MUM REC 52349Remote Monitoring and Control UnitTechnical Reference Manual6. Communication6.1. GeneralThe REC 523 supports the most common remote communication protocols, such as:ï IEC 60870-5-101ï DNP 3.0ï ModbusBy using open and standard protocols in the REC 523 units, it is possible to connectto various SCADA systems.The REC 523 has a default protocol interface that fits to modern SCADA systemsas such. However, in case the existing SCADA system is inadaptable you canmodify the protocol interface by using the Protocol Editing Tool. For IEC 60870-5-101 protocol, the REC 523 revision F provides support for the Protocol MappingTool (PMT). The Protocol Editing Tool and the Protocol Mapping Tool are includedin CAP 505.The REC 523 is also able to communicate with a modem by using freelyprogrammable AT-Hayes commands. This function enables a sophisticated dial-upand re-dialling system, watchdog function and even entering the PIN code forcellular telephone modems.The REC 523 has one RS 485 and two RS 232 serial communication ports.The9-pole RS 485 connection X5.3 connects the REC 523 units to the distributionautomation system via a SPA bus or a LON bus, LON being the default mode. TheRS 232 port (X5.1) is used for the remote communication protocol, whereas thesecond RS 232 port (X5.2) is used for parametrization using the SPA bus protocol.Note that a special parametrization cable of type 1MRS120520 is required to enterthe SPA bus mode in port X5.2.The fibre-optic interface module type RER 103 is used to connect the REC unit tothe fibre-optic communication bus. This module supports both SPA-bus and LON-bus communication. To connect REC 523 to the free topology network, the freetopology network interface (FTT-10) module should be used.For communication port locations, refer to Fig. 7.2.-1, Fig. 7.2.-2 and Fig. 7.2.-3.Note that the use of serial communication ports is not the same indifferent revisions of REC 523 (refer to Chapter 11. Revision historyof REC 523).