Proline Promass 83E/F/O Operation Manual - FMC Technologies

Proline Promass 83Operation5.4.4 Universal / Common practice HART commandsThe following table contains all the universal commands supported by the device.Command No.HART command / Access typeUniversal Commands0 Read unique device identifierAccess type = read1 Read primary process variableAccess type = read2 Read the primary process variable ascurrent in mA and percentage of theset measuring rangeAccess type = read3 Read the primary process variable ascurrent in mA and four (presetusing Command 51) dynamicprocess variablesAccess type = readCommand data(numeric data in decimal form)nonenonenonenoneResponse data(numeric data in decimal form)Device identification delivers information on the deviceand the manufacturer. It cannot be changed.The response consists of a 12-byte device ID:– Byte 0: Fixed value 254– Byte 1: Manufacturer ID, 17 = E+H– Byte 2: Device type ID, e.g. 81 = Promass 83or 80 = Promass 80– Byte 3: Number of preambles– Byte 4: Universal commands rev. no.– Byte 5: Device-spec. commands rev. no.– Byte 6: Software revision– Byte 7: Hardware revision– Byte 8: Additional device information– Byte 9-11: Device identification– Byte 0: HART unit code of the primary processvariable– Bytes 1-4: Primary process variableFactory setting:Primary process variable = Mass flow! Note!• You can set the assignment of device variables toprocess variables using Command 51.• Manufacturer-specific units are represented using theHART unit code "240".– Bytes 0-3: Actual current of the primary processvariable in mA– Bytes 4-7: Percentage of the set measuring rangeFactory setting:Primary process variable = Mass flow! Note!You can set the assignment of device variables to processvariables using Command 51.24 bytes are sent as a response:– Bytes 0-3: Primary process variable current in mA– Byte 4: HART unit code of the primary processvariable– Bytes 5-8: Primary process variable– Byte 9: HART unit code of the second process variable– Bytes 10-13: Second process variable– Byte 14: HART unit code of the third process variable– Bytes 15-18: Third process variable– Byte 19: HART unit code of the fourth processvariable– Bytes 20-23: Fourth process variableFactory setting:• Primary process variable = Mass flow• Second process variable = Totalizer 1• Third process variable = Density• Fourth process variable = Temperature! Note!• You can set the assignment of device variables toprocess variables using Command 51.• Manufacturer-specific units are represented using theHART unit code "240".Issue/Rev. 0.2 (12/12) MN0M022 • Page 45