HEIDENHAIN PWM 20 - Manual (Page 99)

100 HEIDENHAIN ATS Software User's Manual
Closed Loop
Option 1:
The control loop of the machine axis is closed, a T-coupler/signal splitter (SA 1x0 Service
Adapter) is connected between the encoder and the subsequent electronics.
The PWM 20 or the IK 215 are connected to the diagnostic output which is metallically isolated.
Now, the ATS software can monitor the data stream between subsequent electronics and
encoder.
Option 2:
The control loop of the machine axis is closed like for the option 1. The PWM 20 is connected
into the control loop via the IN input and the OUT output. The data stream between subsequent
electronics and encoder can be monitored.
The connection is not metallically isolated!
Note the chapter "Feed-through mode".
Note
The ATS software cannot request data actively; it can only passively monitor data
communication between the subsequent electronics and the encoder. The closed-loop
functionality only works for interfaces at which the subsequent electronics permanently
requests diagnostic data. The diagnostic function of the subsequent electronics must
be active! Otherwise, data communication cannot be monitored. This diagnostic function
is available with EnDat 2.2, Fanuc and Mitsubishi.
See also section “Feed-through mode” on page 30.