Establish The Absolute Origin Position; Establishing The Absolute Origin Position With Di/Do - Delta ASDA-B3 Series User Manual

Absolute System

10.3.4 Establish the absolute origin position

When the absolute position is lost, the servo drive provides three methods to establish the
absolute origin position: DI/DO, parameter setting, or the PR homing function. The following
10
provides more details for each method.

10.3.4.1 Establishing the absolute origin position with DI/DO

When the servo system is controlled by the controller, you can establish the absolute origin
position with DI/DO. Once the absolute position is established, the pulse number is reset to 0
and the PUU number is reset to the value of P6.001. Refer to the following diagram for detailed
descriptions.
Description:
1. When the controller triggers DI.ABSE, it has to wait for T
step.
2. After reaching T
DI.ABSC is triggered and remains on for T
number is reset to the value of P6.001.
(Pulse = 0; PUU = P6.001)
The following table describes the T
switched to On.
10-18
, the controller starts to establish the absolute origin position. When
S
On
DI.ABSE
Off
On
DI.ABSC
Off
Absolute
Position Counter
Figure 10.3.4.1.1 Timing diagram for establishing the absolute origin position with DI/DO
Min.
Max.
, the pulse number is reset to 0 and the PUU
Q
T
S
and T delay time after DI.ABSE and DI.ABSC are
S Q
T (ms)
S
P2.009 + 2
P2.009 + 10
before proceeding to the next
S
T
Q
T (ms)
Q
ASDA-B3