Siemens SINUMERIK 808D ADVANCED Parameter Manual page 262

Machine data
3.4 Axis-specific machine data
Description: ●
Incremental encoder with zero mark(s):
The position value which is set as the current axis position after detection of the
zero mark and traversal of the distance REFP_MOVE_DIST + REFP_MOVE_DIST_CORR
(relative to zero mark). REFP_SET_POS of the reference point number, which is set
at the instant that the edge of the reference cam signal rises (NC/PLC interface
signal DB380x DBX2.4 - .7 (Reference point value 1 to 4)), is set as the axis
position.
●
Distance-coded measuring system:
Target position which is approached when MD34330 $MA_REFP_STOP_AT_ABS_MARKER is set to
0 (FALSE) and two zero marks have been crossed.
●
Absolute encoder:
MD34100 $MA_REFP_SET_POS corresponds to the correct actual value at the calibration
position.
The reaction on the machine depends on the status of MD34210 $MA_ENC_REFP_STATE: When
MD34210 $MA_ENC_REFP_STATE = 1, the value of MD34100 $MA_REFP_SET_POS is transferred
as the absolute value.
When MD34210 $MA_ENC_REFP_STATE = 2 and MD34330 $MA_REFP_STOP_AT_ABS_MARKER = 0
(FALSE), the axis approaches the target position stored in MD34100 $MA_REFP_SET_POS.
The value of MD34100 $MA_REFP_SET_POS that has been set via NC/PLC interface signal
DB380x DBX2.4 - .7 (Reference point value 1 to 4) is used.
Related to:
NC/PLC interface signal DB380x DBX2.4 - .7 (Reference point value 1 to 4)
34104 REFP_PERMITTED_IN_FOLLOWUP
- Enable referencing in follow-up mode
-
- -
Description:
An axis can also be referenced in the follow-up mode under JOG+REF mode by means of an
external motion.
34110 REFP_CYCLE_NR
- Sequence of axes in channel-specific referencing
-
- -
Description:
MD34110 $MA_REFP_CYCLE_NR = 0 -----> axis-specific referencing
Axis-specific referencing is started separately for each machine axis with the NC/PLC
interface signal DB380x DBX4.7 / 4.6 (Plus/minus travel keys).
Up to 8 axes (840D) can be referenced simultaneously.
The following alternatives are provided for referencing the machine axes in a specific
sequence:
●
The operator has to observe the correct sequence on startup.
●
The PLC checks the sequence on startup or defines the sequence itself.
●
The channel-specific referencing function is used.
MD34110 $MA_REFP_CYCLE_NR = 1 -----> channel-specific referencing
Channel-specific referencing is started with the NC/PLC interface signal DB3200 DBX1.0
(Activate referencing). The control acknowledges a successful start with the NC/PLC
interface signal DB3300 DBX1.0 (Referencing active). 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). The axis-
specific MD34110 $MA_REFP_CYCLE_NR can be used to define the sequence in which the
machine axes are referenced:
-1 means:
The machine axis is not started by channel-specific referencing, and NC start is
possible without referencing this axis.
262
FALSE 0
1, 2, 3, 4, 5, 6, 7, 8... -1
A03, A02 R1
BOOLEAN Reset
- 1/1
A03 G1, TE3, D1, R1, Z1
DWORD PowerOn
31 2/2
Parameter Manual, 08/2015, 6FC5397-8EP40-0BA1
Parameter Manual