Siemens — Read Block

Multispan Selection (BW500 and SF500) Sets the current span (1 to 4). Any parameters that relate to span will use this value to determine which span is referenced. See the manual for the BW500 or SF500 for more information on multispan. Applicaton Layer PID Setpoints (BW500 and SF500 only) Contain the current setpoint values as P415 in the Milltronics BW500 or SF500. To write these setpoints bits 02 and 05 in word 8 - Control must be set to “local.” Batch Setpoint (BW500 and SF500 only) Contain the current setpoint value as P564 in the Milltronics BW500 or SF500. Batch Prewarn Setpoint (BW500 and SF500 only) Contain the current setpoint value as P567 in the Milltronics BW500 or SF500.

Word Order This word controls which word comes first in the UINT32 integers. For a value 0, the most significant word is given first. For a value 1, the least significant word is given first. 0 = MSW first 1 = LSW first Read Block Values returned in the words in the Read are in response to the Write to the Siemens Milltronics SmartLinx instrument. Words 0 through 20 have values with fixed meanings and formats. This means that you do not have to start communications with a Write in order to use Read, the data is always there. Words 22 through 29 are values returned in response to writing words 0 through 7 for Single Parameter Access (SPA), see Write Block on page 30.

BW500 and SF500 Page 34 SmartLinx PROFIBUS DP – INSTRUCTION MANUAL 7ML19981AQ03 Description Start End Size Type instrument status 1 0 0 1 bitmapped rate 1 2 2 UINT32 load 3 4 2 UINT32 speed 5 6 2 UINT32 total 1 7 8 2 UINT32 total 2 9 10 2 UINT32 relay status 11 11 1 bitmapped discrete input status 12 12 1 bitmapped multispan selection 13 13 1 integer PID 1 setpoint value 14 15 2 UINT32 PID 2 setpoint value 16 17 2 UINT32