Siemens SINUMERIK 840DE SL - 5.2 System variables; 5.3 Signals; 5.3.1 Signals to NC; 5.3.2 Signals from NC

Data Lists
5.2 System variables
Various NC/PLC Interface Signals and Functions (A2)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
5-5
5.2 5.2 System variables
Names Description
$P_FUMB Unassigned part program memory (Free User Memory Buffer)
$A_DBB[n] Data on PLC (data type BYTE)
$A_DBW[n] Data on PLC (WORD type data)
$A_DBD[n] Data on PLC (DWORD type data)
$A_DBR[n] Data on PLC (REAL type data)
5.3 5.3 Signals
5.3.1 Signals to NC
DB number Byte.Bit Description
10 56.7 Keyswitch setting 0 to 3
5.3.2 Signals from NC
DB number Byte.Bit Description
10 103.0 Remote diagnostics (MMC alarm is active)
10 103.5 AT box ready
10 103.6 MMC temperature limit
10 103.7 MMC battery alarm
10 104.7 NCK CPU Ready
10 108.1 MMCCPU2Ready (MMC to OPI or MPI)
10 108.2 MMC CPU1 Ready (MMC to MPI)
10 108.3 MMC CPU1 Ready (MMC to OPI, standard link)
10 108.6 Drive Ready
10 108.7 NC Ready
10 109.0 NCK alarm is active
10 109.5 NCU573 heat-sink temperature alarm
10 109.6 Air temperature alarm
10 109.7 NCK battery alarm