HEIDENHAIN PROFIBUS-DP (DPV0) - Manual (Page 16)

Encoder gateway installation
16
2.4 Shielding philosophy
To achieve the highest possible noise immunity and resistance
against other EMI related disturbances the bus and power supply
cables shall always be shielded. The screen should be connected
to ground on both ends of the cable. In certain cases
compensation current might flow over the screen. Therefore a
potential compensation wire is recommended.
2.5 GSD file
PROFIBUS Gateways can be configured and parameterized
corresponding to the requirements of the user. When the system
is started, the PROFIBUS devices are set and configured in
DDLM_Set_Prm mode, i.e the application class set by means of
the GSD file in the configuration tool and the operating
parameters are transferred to the respective slave.
Available GSD files can be downloaded from
www.heidenhain.com
GSD file
Gateway functionality GSD file
Gateway PROFIBUS DPV0
(For rotary encoders)
ENC_A400
Table 4 Available GSD file for DPV0 gateway
When configuring the gateways two device classes (Class 1
or Class 2) can be selected as described in chapter 4.
Selectable parameters and functionality of the device depend
on the selected encoder class. This data, saved in the
PROFIBUS master is transferred once to the gateway when
the system is powered on. If the gateway has been started
with one GSD file and a new GSD file with a different ID-
number shall be used, the gateway needs to be restarted
before it can use the new GSD file.
After the configuration and parameter data have been received,
the gateway enters normal operation with cyclic data transfer i.e.
“DDLM_Data_Exchange mode”.