HEIDENHAIN PWM 20 - Manual (Page 122)

November 2014 Software description 123
5.7.2 Fanuc
Absolute HEIDENHAIN encoders with the suffix F in the model designation (e.g. LC 193F)
feature a Fanuc serial interface or a Fanuc
i interface
The ATS software supports the following Fanuc interfaces:
- Fanuc Serial interface (ordering designation Fanuc 01 or 02)
- Fanuc
i Interface (ordering designation 05, comprises Fanuc 02)
The software functions are basically those of the EnDat interfaces.
Fanuc interfaces are purely serial interfaces; incremental signals are not transferred. The
interfaces are unidirectional (except Fanuc 05). Therefore, no functions are supported that
write data into the encoder. (Datum shift, display of memory contents, etc. is not possible!)
Examples of displays in the status line
"Transmission" indicates that data transfer is correct (CRC test).
"Alarm" is a group signal to indicate that one or several error messages are set in the encoder.
With the Fanuc interface the status display can only be reset by switching the encoder off and
on.
"Ref.mark" corresponds to the EnDat status function "Ref. mark" in combination with EIB
interface electronics, e.g. EIB 392F.
If HEIDENHAIN converters are used that convert incremental interfaces to Fanuc absolute
interfaces, the reference mark must be traversed to achieve the absolute status. When the
reference mark is traversed, the color of the "LED" changes from gray to yellow. The yellow color
symbolizes the absolute encoder status. If a Fanuc absolute interface is connected, the LED is
permanently yellow.
See also section “Connection to EIB interface electronics” on page 54
Note
The Fanuc
i mode is only supported by the PWM 20!
The Fanuc
i mode becomes active when connecting via ID number or when connecting
manually by selecting "FANUC ALPHAi interface".
The integrated Fanuc 02 interface is activated through manual connection and "Fanuc"
setting.
For more information on the interface, please contact Fanuc!