Words 1 to 10: Point Reading These words contain the value of parameter P920 (Reading) for points 1 to 10, respectively. The reading is expressed as a percent of full scale, multiplied by 100, giving a range of –20,000 to 20,000 which corresponds to –200.00% to 200.00%. Refer to the Siemens Milltronics SmartLinx instrument documentation for a definition of “P920”. Applicaton Layer Note: These values may contain numeric level data for inoperative or malfunctioning points: refer to read word 0, and read words 11 to 20, for the actual operational status of the measurement points. Words 11 to 20:
Point Alarm and Status These words contain the corresponding alarm and status bits for indexed measurement points 1 to 10, respectively. Bit status: 0 = false 1 = true Bit description 00 point not configured 01 point failsafe timer expired 02 point failed (cable shorted, open, or transceiver problem) 03 point temperature sensor failed 04 to 12 reserved for future use 13 level emptying 14 level filling 15 scan mode priority If the product is an AiRanger/SITRANS LU Version 5.19 or above, only: These words contain values requested by writing to words 1 to 4 of the Write Block. The type of data and format are specified with that request, and returned in Read words 31 to 34.
Page 28 SmartLinx PROFIBUS DP – INSTRUCTION MANUAL 7ML19981AQ03 Bit Description 04 Low-Low Alarm (1 = ON) Low Alarm (1=ON) High Alarm (1 = ON) High-High Alarm (1 = ON) 05 06 07