Signals From Nc To Plc (Db10) - Siemens SINUMERIK 840Di Function Manual

DB10
DBX103.7 MMC101/102 battery alarm
Edge evaluation: no
Signal state 1 or The MMC battery monitoring function has responded. In the event of a power failure, the most
edge change 0 → 1 recently modified data and a correct device configuration may be lost.
A corresponding MMC alarm is signaled. Check the MMC backup battery.
An insufficient (low) battery voltage also affects the actual time on the MMC.
Signal state 0 or No MMC battery alarm is active.
edge change 1 → 0
Signal irrelevant SINUMERIK 840/840Di/810D with PCU 50, PCU 20 or PCU 70
for ...
References /BH/ Operator Components, Manual, Chapter: "PCU 50 component, replace battery"
2.1.3

Signals from NC to PLC (DB10)

DB10
DBX104.7 NCK-CPU-Ready
Edge evaluation: no
Signal state 1 or The NCK CPU is ready and registers itself cyclically with the PLC.
edge change 0 → 1
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.
Signal state 0 or The NCK CPU is not ready.
edge change 1 → 0
If a sign of life is not received from the NCK, the PLC/NCK interface is neutralized by the PLC basic
program and the interface signal "NCK CPU Ready" is set to 0.
The following measures are initiated by the PLC basic program:
•
•
•
Application Individual PLC outputs can, for example, be set to a defined state from the PLC user program.
example(s)
References /DA/ Diagnostics Guide
/FB1/ Description of Functions Basic Machine; PLC Basic Program (P3)
NC/PLC Interface Signals (Z1)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Signal(s) updated: cyclic
Signal(s) updated: cyclic
Status signals from the NCK to the PLC (user interface) are deleted (cleared)
Change signals for the help functions are deleted
Cyclic processing of the user interface PLC to NCK is terminated.
2.1 Various interface signals and functions (A2)
Detailed Description
2-3