5 PLC Interface 11.92
5.2.1 Assignment of DB 1 (diagnostics)
7 6 5 4 3 2 1 0
Bit No.
Byte No.
DW 16
DW 17
DW 18
DW 19
DW 20
DW 21
Semaphore technique within processing levels
Number of lost requests during LIM/SIM OB2
15 14 13 12 11 10 9 8
Number of lost requests during LIM/SIM OB3
Number of lost requests during LIM/SIM OB4
Number of lost requests during LIM/SIM OB5
Number of lost requests during LIM/SIM OB6
Number of lost requests during LIM/SIM OB7
5–16 © Siemens AG 1992 All Rights Reserved 6FC5197- AA60
SINUMERIK 840C (IA)