Siemens SINUMERIK 840Di - Page 316

06.03
10.5 Axes and spindles
10-316
 Siemens AG, 2003. All rights reserved
SINUMERIK 840Di Manual (HBI) – 06.03 Edition
The interface signals
 DB31, ... DBX1.5 (position measuring system 1 selected)
 DB31, ... DBX1.6 (position measuring system 2 selected)
can be used to switch from the PLC between the two position measuring
systems of a machine axis.
References: /FB/ Description of Functions, Basic Machine
A2, Various Interface Signals
Table 10-19 Setpoint/actual-value channels: Machine data
Number Identifier Name/remarks Ref.
Axis-specific ($MA_ ...)
30100 CTRLOUT_SEGMENT_NR Setpoint assignment: Drive type
5 = PROFIBUS DP
30110 CTRLOUT_MODULE_NR Setpoint assignment: Logical drive number
30130 CTRLOUT_TYPE Setpoint output type
0 = simulation
1 = speed setpoint output
30200 NUM_ENCS Number of measuring channels
1 = one position measuring system installed
2 = two position measuring systems installed
30210 ENC_SEGMENT_NR[0] Actual-value assignment: Drive type
5 = PROFIBUS DP
30220 ENC_MODULE_NR[0] Actual-value assignment: Logic drive number for
position measuring system 1
30220 ENC_MODULE_NR[1] Actual-value assignment: Logic drive number for
position measuring system 2
30230 ENC_INPUT_NR[0] Actual-value assignment: Position encoder 1
1 = motor measuring system
2 = direct measuring system
30230 ENC_INPUT_NR[1] Actual-value assignment: Position measuring sys-
tem 2
1 = motor measuring system
2 = direct measuring system
30240 ENC_TYPE[0] Actual-value acquisition modes
0 = simulation
1 = incremental encoder
4 = absolute encoder with EnDat interface
Table 10-20 Switching over the position measuring system: Interface signals
DB
Number
Bit, Byte Name Ref.
Axis/spindle-specific Signals from PLC to axis/spindle
31, ... 1.5 Position measuring system 1
31, ... 1.6 Position measuring system 2
/FB/ Description of Functions, Basic Machine
G2 Velocities, Setpoint/Actual-Value Systems, Closed-Loop Control
Section: Setpoint/actual-value system
Measuring system
switchover
Machine data
Interface signals
References
10 NC Start-U
p
with HMI Advanced