Lika DRAW WIRE SFA-10000 Series, User Manual

Page: 43 / 72

SFA-5000 • SFA-10000 Profibus
6 Profibus
®
interface
Lika SFA draw-wire encoders are Slave devices and comply with the “Profibus-
DP Profile for Encoders”; they can be set as Class 1, Class 2 or Class 2 (+VEL)
devices (see the “6.2 Classes of the Device profile“ section on page 43).
For any omitted information refer to the official Profibus website
www.profibus.com .
6.1 GSD file
Profibus draw-wire encoders are supplied with their own GSD file
SFA25_Vx.GSD
, Vx is intended to indicate the file version. To download the file
enter
www.lika.biz > ROTARY ENCODERS > DRAW-WIRE UNITS >
ABSOLUTE
.
The GSD file is available in both English version (
SFA25_Vx.GSE
) and Italian
version (
SFA25_Vx.GSI
).
The GSD file has to be installed in the Profibus Master device.
6.2 Classes of the Device profile
Encoder class must be set when you configure the device.
Mandatory Class 1 provides the basic functions of the device and can be used
for:
•
sending the position value (see Position value parameter);
•
changing the counting direction (see
Code sequence
parameter);
•
setting the preset value (see
Preset value
parameter);
•
acquiring reduced diagnostic information (see
Diagnostic type
parameter = “16 bytes fixed (6+10)”).
Class 2
provides all the Class 1 functions and additional advanced functions
such as:
•
scaling function (see
Scaling function control
,
Counts per revolution
and
Total resolution
parameters);
•
extended diagnostic information (see
Diagnostic type
parameter = “16
bytes (6+10)” or “63 bytes (6+57)”).
MAN SFA_5000_10000_PB E 1.0 Profibus® interface 43 of 72