Parameter Number / Primary Index / Secondary Index, SPA; Decimal Place / For- mat / Read/Write flag, SPA These words contain the last values written to words 0 to 2 and words 5 to 7 of the Write area. They confirm that the parameter value has been written. These words are not updated until the value has been successfully transferred and stored in the Siemens Milltronics SmartLinx instrument. Application Layer Use these words as an indicator that the requested information has been updated. Value, SPA The returned value of the specified parameter and index. Word Order The placement of the most significant word (MSW).
0 = MSW first 1 = MSW second Instrument Status 2 This word is used to feed back the current operating state of the product. Each bit gives the state of different parts of the product, some mutually exclusive, others are not. The state should be checked to verify operation. Bits 0 Totalizer 1 overflow If Totalizer 1 has overflowed, (that is, has exceeded the spaces available in SmartLinx), this bit is set. The overflow condition can be changed by reducing Communication Totalizer resolution (P634). Bit 1 Totalizer 2 overflow If Totalizer 2 has overflowed, (that is, has exceeded the spaces available in SmartLinx), this bit is set.
The overflow condition can be changed by reducing Communication Totalizer resolution (P634). Batch Totalizer (BW500 and SF500 only) Contains the current value for the Batch Totalizer in engineering units. (For a full description of this reading, please refer to your Milltronics Integrator manual). 7ML19981AQ03 SmartLinx PROFIBUS DP – INSTRUCTION MANUAL Page 39 Bit # Description Bit Clear (0) Bit Set (1) 0 Totalizer 1 overflow no overflow overflow condition 1 Totalizer 2 overflow no overflow overflow condition