Siemens SIMATIC FM 453, Manual

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5-20
FM 453 Servo Drive / Step Drive Positioning Module
C79000-G7076-C453-01
Figure 5-5 shows the relationship between the zero reference mark in your
application and the relevant machine data.
Machine data
MD10 (encoder type)
Zero pulse of the
incremental encoder
Zero reference mark
MD37.26 (control signal -
NIX active)
MD61(control mode)
MD53 (No. of increments/
current-sourcing pattern cycle)
External zero pulse
encoder (NIX)
Current sourcing
pattern zero signal
(BMN: n per rev.)
MD37.24 (control signal -
BMN active)
Zero pulse encoder,
motor-internal,
incremental precision
(BMN: 1 per rev.)
Zero reference mark not
defined
> 1 (absolute encoder)
= 1 (incremental encoder)
= 0 (not encoder)
= 0 (servo motor)
= 1, 7 (stepper motor)
= 0
= 0
= 0 (1 pulse per revolution)
Encoder connection via
connectors X2 to X4
Connection of neutral
conductor input via
connector X1
= 1 (zero pulse encoder)
n
w
4 (n = pulses per current-sourcing cycle)
= 1 (zero pulse from stepper motor)
Fig. 5-5 Zero Reference Mark Selection
Note
In the case of the zero mark variants that are marked with a grey back-
ground, the “Rotation monitoring” function can be used.
Zero Reference
Mark
Defining Parameters of the FM 453