Author: Kleines, H.
Paper Title Page
THPHA143 Synchronous Motion with S7-1500 PLCs in Neutron Instruments 1716
 
  • H. Kleines
    FZJ, Jülich, Germany
  
  Con­trol sys­tems of neu­tron in­stru­ments are re­spon­si­ble for the move­ment of a va­ri­ety of me­chan­i­cal axes. In the TANGO based con­trol sys­tems de­vel­oped by Forschungszen­trum Jülich for neu­tron in­stru­ments, Siemens S7-300 PLCs with sin­gle axis step­per motor con­trollers from Siemens or Phytron have been used for this pur­pose in the past. Syn­chro­nous co­or­di­nated move­ment of sev­eral axes has been im­ple­mented with ded­i­cated 4-axes NC mod­ules (FM357) for the S7-300. In fu­ture, the re­cent S7-1500 PLC fam­ily shall be used for mo­tion tasks. With the S7-1500, step­per motor con­trol is pos­si­ble with low-cost fast dig­i­tal out­puts, so called PTOs (pulse trade out­puts). The in­te­grated mo­tion func­tions of the S7-1500 di­rectly sup­port syn­chro­nous move­ment. The func­tion block in­ter­face de­fined by PLCopen serves as a ho­mo­ge­neous pro­gram­ming in­ter­face which is in­de­pen­dent of a spe­cific mo­tion con­troller. For the sin­gle crys­tal dif­frac­tome­ter HEiDi at the re­search re­ac­tor FRM-II a re­place­ment for a S7-300 with FM357 has been im­ple­mented based on a S7-1500 PLCs and a PTO mod­ule.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-THPHA143  
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