Siemens SINAMICS S120 Function Manual page 251

Table 4-8
p2604
0
1
Fig. 4-26
A modulo axis has an unrestricted traversing range. The value range of the posi-
tion repeats itself after a specific value that can be parameterized (the modulo
range or axis cycle), e.g. after one revolution: 360° –> 0°. The modulo range is set
in parameter p2576 and the correction is activated using parameter p2577. The
modulo correction is carried-out on the setpoint side. This is provided with the
correct sign via connector output r2685 (correction value) to appropriately correct
the position actual value. EPOS initiates the activation of the correction via a rising
edge of binector output r2684.7 (activate correction) (r2685 (correction value) and
r2684.7 (activate correction) are already connected as standard with the corres-
ponding binector/connector input of the position actual value conditioning). Abso-
lute position data (e.g. in a traversing task) must be located within the modulo
range. The modulo correction can be activated for both linear and rotary length
units. The traversing range cannot be limited by a software limit switch.
Overview of important parameters (refer to the List Manual)
S p2576
S p2577
S p2583
S r2684
S r2685
© Siemens AG 2006 All Rights Reserved
SINAMICS S120 Function Manual, 03/2006 Edition
The compensation value is switched-in as a function of p2604
Traversing direction
positive
negative
positive
negative
Modulo range 1
p2576 (360000 )
De-activated
0
Modulo correction
activation
p2577
(0)
Modulo correction
EPOS modulo correction, modulo range
BI: EPOS modulo correction, activation
EPOS backlash compensation
CO/BO: EPOS status word 2
CO: EPOS correction value
Extended Functions
Function module "basic positioner"
Switch-in compensation value
none
immediately
immediately
none
Position setpoint
r2665
4-251