Basic Functions
Function Manual 09/2011, 6FC5397-0BP40-2BA0
1611
19
Z1: NC/PLC interface signals
19.1 Various interface signals and functions (A2)
19.1.1 Signals from PLC to NC (DB10)
19.1.2 Selection/Status signals from HMI to PLC (DB10)
DB10
DBX56.4 - DBX56.7 Key-operated switch positions 0 to 3
Edge evaluation: No Signal(s) updated: Cyclic
Significance of signal Depending on the key-operated switch position, access to certain elements in the NCK can be
enabled or disabled.
• Key-operated switch position 0 represents the lowest access rights
• Key-operated switch position 3 represents the highest access rights
The NC/PLC interface signals of key-operated switch positions 1 to 3 can either be directly specified
from the key-operated switch on the machine control panel or from the PLC user program.
It is only permissible to set one bit. If several bits are set simultaneously, the control internally
activates switch position 3.
Key-operated switch position DBX56.7 DBX56.6 DBX56.5 DBX56.4
0 0001
1 0010
2 0100
3 1000
Corresponding to ... Machine data for protection levels: MD11612, MD51044 - MD51064, MD51070 - MD51073,
MD51199 - MD51211, MD51215 - MD51225, MD51235
Disabling using a password
DB10
DBX103.0 Remote diagnosis active
Edge evaluation: No Signal(s) updated: Cyclic
Signal state 1 or
edge change 0 → 1
Remote diagnosis (optional) is active, i.e. the control is operated via an external PC.
Signal state 0 or
edge change 1 → 0
Remote diagnosis is not active.
DB10
DBX103.5 AT box ready
Edge evaluation: No Signal(s) updated: Cyclic
Signal state 1 or
edge change 0 → 1
The AT box for expansion modules is ready.
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