Siemens SINUMERIK 828D Function Manual page 1173

General signals from axis/spindle (excerpt)
State interrogation is possible via the interface DB390x.DBB8. However, for simulation, the axis machine data
MD30350 MA_SIMU_AX_VDI_OUTPUT must be set.
Table 14-2
DB3900...3907
Data block
Byte Bit 7
DBB 0008 PLC axis/
spindle
Request and relinquish PLC axis
Functional interface
The two tables provide an overview of the available interface signals. The precise description of the signals and
the explanation of what signals are relevant for the individual functions are explained in the following.
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Signals from axis/spindle [r]
Bit 6 Bit 5
Neutral Axis
axis/ interchang
spindle e possible
NCK -> PLC interface
Bit 4 Bit 3
New type
requested
from PLC
P4: PLC for SINUMERIK 828D
14.6 Function interface
Bit 2 Bit 1
NC axis/
Bit 0
spindle
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