Siemens SINUMERIK 802D sl Function Manual page 316

Reference Point Approach (R1)
18.1 Fundamentals
Axisspecific referencing
Axis-specific referencing is started separately for each machine axis with the "plus/minus
traversing keys" interface signal (V380x 0004.7 /.6). All axes can be referenced at the same
time. If the machine axes are to be referenced in a particular sequence, the following options
are available:
● The operator must observe the correct sequence when starting.
● The PLC user program checks the sequence on start-up or defines the sequence itself.
● The order is defined in MD34110 REFP_CYCLE_NR (see channel-specific referencing)
Channelspecific referencing
Channel-specific referencing is started with the "activate referencing" interface signal (V3200
0001.0). The control acknowledges a successful start with IS "Referencing active" (V3300
0001.0). Each machine axis assigned to the channel can be referenced with channel-specific
referencing (this is achieved internally on the control by simulating the plus/minus traversing
keys). Axis-specific MD34110 REFP_CYCLE_NR (axis sequence for channel-spec.
referencing) can be used to define the sequence in which the machine data is referenced. If
all axes entered in MD34110 REFP_CYCLE_NR have reached their end points, the "All axes
referenced" interface signal (V3300 0004.2) is enabled.
Special features
● Referencing is aborted with "Reset" interface signal (V3000 0000.7). All axes that have
● Working area limiting and software limit switches are not active for non-referenced
● The defined axis-specific accelerations are observed at all times during referencing
● The reference point approach can be started only with the direction key for the direction
Referencing in the part program
One or more axes that have lost their reference can be referenced at the same time. The
sequence of the individual phases is identical to axis-specific referencing, except that the
process is started with the G74 command instead of the plus/minus traversing keys and is
done via the machine axis identifiers.
Reference:
/BP_/ Operation and Programming
316
not reached their reference point by this time are considered to be not referenced. IS
"Referencing active" is reset and alarm 20005 is signaled.
machine axes.
(except when alarms occur).
stored in MD34010 REFP_CAM_DIR_IS_MINUS.
Turning, Milling, Nibbling
Function Manual, 11/2012, 6FC5397-1CP10-5BA0