ABB REM 610 Technical Reference Manual

Also see for REM 610: Operator's manual Product guide Installation manual Product guide Technical reference manual

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ABB REM 610 Technical Reference Manual Manual pdf 74 page image

Table 5.1.13.-2 Information mapping of configuration set 1 and 2MeasurandNormalize factorRated valueConfiguration set 1Configuration set 2Function typeInformation numberType identificationCurrent l a 2.4 I n(CT) X X 135 140 9Current l b 2.4 I n(CT) X XCurrent l c 2.4 I n(CT) X XCurrent I n 2.4 I n(CT) X X5.1.14. Modbus remote communication protocolThe master/slave protocol Modbus was first introduced by Modicon Inc. and iswidely accepted as a communication standard for industrial device controllers andPLCs. For the protocol definition, refer to Section 1.4. Product documentation.The implementation of the Modbus protocol in the relay supports both the RTU andthe ASCII link mode. Both the link mode and the line setting parameters are user-configurable. The character codings of the link modes follow the protocoldefinition. The RTU character format is presented in Table 5.1.14.-1 and the ASCIIcharacter format in Table 5.1.14.-2:Table 5.1.14.-1 RTU character formatCoding system 8-bit binaryBits percharacter1 pickup bit8 data bits, the least significant bit is sent first1 bit for even/odd parity; no bit if parity is not used1 stop bit if parity is used; 2 stop bits if parity is not usedTable 5.1.14.-2 ASCII character formatCoding system Two ASCII characters representing a hexadecimal numberBits percharacter1 pickup bit7 data bits, the least significant bit is sent first1 bit for even/odd parity; no bit if parity is not used1 stop bit if parity is used; 2 stop bits if parity is not usedThe turnaround time (response time) of the relay depends on theamount of data requested in a query. Therefore, the turnaround timecan vary between approximately 10 and 70 ms. However, a turnaroundtimeout no lower than 100 ms is recommended for the Modbus master.74REM 610REM 610 Motor Protection RelayTechnical Reference Manual - ANSI Version1MRS755537