METHODS AND STRUCTURES FOR UTILIZING A MEMORY DEVICE FOR A PLC
摘要
Certain exemplary embodiments comprise a method comprising a plurality of activities comprising: at a programmable logic controller comprising a memory device, receiving a request to create a data log that is adapted to receive data from a process; initializing the data log by writing to the data log a head marker code in the record type field of a first record and an invalid code in the record type field of a last record of the data log, the last record logically preceding and logically adjacent to the first record.
申请公布号
WO2005083534(A2)
申请公布日期
2005.09.09
申请号
WO2005US05227
申请日期
2005.02.18
申请人
SIEMENS ENERGY & AUTOMATION, INC.;FULTON, TEMPLE LUKE;BOGGS, MARK STEVEN;HAUSMAN, STEVEN MICHAEL;JOHNSON, WILLIAM H.
发明人
FULTON, TEMPLE LUKE;BOGGS, MARK STEVEN;HAUSMAN, STEVEN MICHAEL;JOHNSON, WILLIAM H.