Siemens SINUMERIK 840Di Function Manual page 405

Measurement channel no. 6 should be assigned to machine axis "X1":
X416 as direct measuring system.
The logical number of the drive is set automatically to 4.
Fig. 2-3
Actual-value assignment
1st axis actual value from motor
encoder
2nd axis actual value from linear
scale
Number of encoders:
Actual-value acquisition modes
Velocities, Setpoint/Actual-Value Systems, Closed-Loop Control (G2)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Example of setpoint/actual-value routing with axis expansion interface
(X414)
(X416)
1:
2:
2.3 Setpoint/actual-value system
Machine data parameterization for 810D
MD30220 $MA_ENC_MODULE_NR[0]
MD30230 $MA_ENC_INPUT_NR[0]
MD30220 $MA_ENC_MODULE_NR[1]
MD30230 $MA_ENC_INPUT_NR[1]
MD30200 $MA_NUM_ENCS
MD30240 $MA_ENC_TYPE[0]
MD30240 $MA_ENC_TYPE[1]
Detailed Description
= 4
= 1
= 3
= 1
= 2
= 1
= 1
2-31