Siemens SIMATIC FM 453 Manual page 275

9.7.2 Servo Position Control
Overview
In the servo position control function, the setpoint characteristic specified by
the interpolation function is implemented in conjunction with the feed drive
of the machine or installation in the form of a traverse movement of the axis .
The following axis configurations are possible, depending on the parameter-
ization:
0
1
7
This function is subdivided into subfunctions as shown below, which are then
described in detail:
t)
v(
Position
comparitor
From interpolation
Backlash
compen- sation
MD19
MD30
+
MD31
From encoder
(actual value)
Example: Channel 1
Fig. 9-10 Overview of Servo Position Control Function
FM 453 Servo Drive / Step Drive Positioning Module
C79000-G7076-C453-01
MD61 MD10
0 Servo drive, speed positioned without encoder
1 Servo drive in position controller with incremental encoder
3, 4, 13, 14 Servo drive in position controller with absolute encoder
0 Step drive in position controller without encoder, with FM-in-
ternal pulse feedback
1 Step drive in position controller with incremental encoder
3, 4, 13, 14 Step drive in position controller with absolute encoder
– Step drive in open-loop control mode
MD37
Following
error
Enable CL Controller
controller ready
–
From drive actuation
X2
Description of Functions
Axis Configuration
Drift
compensation
+
+
Target speed
Position con-
troller
To actuating signal
driver
Control
diagnostics
MD24
MD25
MD26
MD37
MD39
Error signals
9-75