Siemens SINUMERIK 828D Function Manual page 1174

P4: PLC for SINUMERIK 828D
14.6 Function interface
Signals to PLC axis
DB3800...3807
Data block
Byte Bit 7
DBB 3000 Start
positioning
axis
DBB 3001
DBB 3002 Automatic
gear
selection
DBB 3003 Indexing
position
DBD 3004
DBD 3008
The bits of the distance conditions and the direction of rotation definition define the particular positioning or
traversing mode, only one of the bits must be set:
Meaning
Positioning absolute
Positioning incremental
Positioning, shortest distance
Positioning, absolute, positive approach direction
Positioning, absolute, negative approach direction
Direction of rotation as for M4
The remaining bits are used to specify and start the particular function, these function bits as well as position and
velocity are explained in more detail for the individual functions.
Signals from PLC axis
3900...3907
Data block
Byte Bit 7
3000 Positioning
axes active
3001
3002
3003
1174
Signals to PLC axis [r/w]
Bit 6 Bit 5
Start Start
spindle spindle
positioning rotation
Stop
spindle
rotation
Constant Direction of
cutting rate rotation as
for M4
Position (REAL, with indexing axis: DINT)
Feedrate velocity (REAL), if < 0, the value is taken from machine data POS_AX_VELO
Signals from PLC axis [r]
Bit 6 Bit 5
Position
reached
PLC -> NCK interface
Bit 4 Bit 3
Start
spindle
oscillation
Stop
spindle
oscillation
Handwheel
override
Distance condition to be set
No mode bit set
DBB3002.0 = 1
DBB3002.1 = 1
DBB3003.1 = 1
DBB3003.0 = 1
DBB3002.5 = 1
PLC -> NCK interface
Bit 4 Bit 3
Error number
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Bit 2 Bit 1
Traversing Distance
dimension, condition,
inches (not shortest
metric) distance
(DC)
Distance
condition,
abs. pos.
direction
(ACP)
Bit 2 Bit 1
Error while
traversing
Basic Functions
Bit 0
Distance
condition,
incremental
(IC))
Distance
condition,
abs. neg.
direction
(ACN)
Bit 0
Axis cannot
be started