The Siemens Milltronics instrument must be configured to use word 0 to control point-on- priority. For each point, set parameter P720 to 1, to permit priority control for that point. Note: Point-on-priority only applies to the AiRanger XPL+/SITRANS LU 10. Application Layer Word 1: Parameter Number, MPA Specifies the parameter number for the returned values in words 21 to 30 (see Read Block on page 27). Word 2: Secondary Index, MPA Specifies the secondary index for the parameter specified by word 1. This word is ignored for parameters that don’t use multiple indexes (see Parameter Indexes on page 19 for more information). Word 3:
Decimal Place, MPA Specifies the number of decimal places to shift the returned values in words 21 to 30 of the Read Block. Positive values indicate that the decimal place shifts to the left, and negative values indicate that the decimal place shifts to the right. For example: word 3 = 1:all returned values have the decimal place shifted 1 space to the left and a returned value of 5,213 is interpreted as 521.3 word 3 = –1:a returned value of 5,213 is interpreted as 52,130 Word 4: Format, MPA Sets the format for the returned values in words 21 to 30. 0 = normal 1 = percent Note:
When the format is selected as “percent” the decimal place value (word 3 of the Write block) is ignored and two decimal places are always used. For example, a value of 5947 represents 59.47%. Word 5: Parameter, SPA Specifies the parameter number for Single Parameter Access (SPA), see page 22. Word 6: Primary Index, SPA Specifies the primary index number for the parameter in word 5. Word 7: Secondary Index, SPA Specifies the secondary index for the parameter in word 5. This word is ignored for parameters that don’t use multiple indexes (see Parameter Indexes on page 19 for more information). 7ML19981AQ03 SmartLinx PROFIBUS DP – INSTRUCTION MANUAL Page 25