GE B30 Communications Manual

Also see for b30: Maintenance manual Instruction manual Instruction manual Instruction manual Communications manual

Contents

UR FAMILY – COMMUNICATIONS GUIDE 5-1UR FamilyChapter 5: IEC 60870-5-103 communicationIEC 60870-5-103 communicationThis chapter outlines the IEC 60870-5-103 communications protocol.5.1 OverviewIEC 60870-5-103 is defined as a companion standard for the informative element of the protection equipment. IEC 60870-5-103 defines communication for a serial, unbalanced link only. Communication speeds are defined as either 9600 or19200 baud.This manual assumes basic knowledge of the IEC 60870-5-103 protocol and the standard IEC 60870 documents relating tothe protocol.Standard IEC 60870 documents relating to IEC 60870-5-103:• IEC 60870-5-1 Transmission frame formats• IEC 60870-5-2 Link transmission procedures• IEC 60870-5-3 General structure of application data• IEC 60870-5-4 Definition and coding of application information elements• IEC 60870-5-5 Basic application functions• IEC 60870-5-6 Conformance testing guidelinesAn IEC 60870-5-103 device is required to provide an interoperability table. Interoperability means that any requiredapplication data in the device, which can be coded into an IEC 60870-5-103 data type, can be mapped into the IEC 60870-5-103 address space. This data is recognized by any IEC 60870-5-103 master.5.2 Factor and offset calculation to transmit measurandThe general formula for the transmitted value is Xt = a * X + bwhereThe protocol applies when ordered with the product. Check your order code.