Word 0: Point-on-Priority XPL PLUS Bits 00-09 set the priority status of corresponding indexed points 1 to 10. Applicaton Layer bit status 0 = normal 1 = priority For example, if bits 00 and 02 are set to 1, then points 3 and 1 are on priority scan. All other bits are reserved and contain 0. In order to use word 00 to control point-on-priority, you must configure the Siemens Milltronics SmartLinx instrument to permit this. For each point, set Parameter P720 to 1 (manual, BIC-II or SmartLinx SPA) to permit priority control for that point. Note: Point on Priority only applies to the XPL+.. Word 1: Parameter Number, MPA Specifies the parameter number for the returned values in words 11 to 20.
See Read Block on page 24. Word 2: Parameter Secondary Index, MPA Specifies the secondary index for the parameter specified by word 1. This word is ignored for parameters that do not use multiple indexes. See Parameter Indexes on page 17 for more information. Word 3: Decimal Place, MPA Specifies the number of decimal places to shift the returned values. This affects words 11 to 20 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. Page 22 SmartLinx DeviceNet – INSTRUCTION MANUAL 7ML19981BH02 bit 09 08 07 06 05 04 03 02 01 00 index 10 9 8 7 6 5 4 3 2 1 bit 09 08 07 06 05 04 03 02 01 00 index 0 0 0 0 0 0 0 1 0 1