Signals From The Nc To The Plc (Db10) - Siemens SINUMERIK 840D sl Function Manual

Z1: NC/PLC interface signals
19.1 Various interface signals and functions (A2)
DB10
DBX103.5 AT box ready
Edge evaluation: No
Signal state 1 or edge The AT box for expansion modules is ready.
change 0 → 1
Signal state 0 or edge The AT box is not ready. An expansion module conforming to the AT specification has either no
change 1 → 0 functionality or restricted functionality.
DB10
DBX103.6 HMI temperature limit
Edge evaluation: No
Signal state 1 or edge The environment conditions of the limit value are in the permitted tolerance range of 5 to 55° C.
change 0 → 1
Signal state 0 or edge The temperature range was either exceeded, or the temperature fell below the limit.
change 1 → 0 The temperature monitor has responded and the PCU is disabled.
DB10
DBX103.7 HMI battery alarm
Edge evaluation: No
Signal state 1 or edge The battery monitor has responded. Power failure can cause the loss of recently changed data and
change 0 → 1 a correct device configuration. An appropriate alarm is issued. The buffer battery should be checked.
An insufficient battery voltage also affects the current time on the user interface.
Signal state 0 or edge No HMI battery alarm is present.
change 1 → 0
Additional references Operator Components Manual (PCU)
19.1.3

Signals from the NC to the PLC (DB10)

DB10
DBX104.7 NCK CPU ready
Edge evaluation: No
Signal state 1 The NCK CPU is ready and registers itself cyclically with the PLC.
After a correct initial start and the first complete OB1 cycle (initial setting cycle) the PLC and NCK
continuously exchange sign-of-life signals.
The PLC basic program sets the interface signal "NCK CPU Ready" to 1.
1552
Signal(s) updated: Cyclically
Signal(s) updated: Cyclically
Signal(s) updated: Cyclically
Signal(s) updated: Cyclically
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions