HEIDENHAIN PROFIBUS-DP (DPV0) - Manual (Page 47)

Encoder and Gateway functionality, DPV0
47
5.6.3 Operating Status
Octet 9 in the diagnostic function provides information
about encoder-specific parameters. A class 2 encoder
sets the functionality bit for class 2 commands in order to
show the DP master that all class 2 commands are
supported. The DP master must activate the class 2
functionality bit in the parameter message (DDLM_Set_Prm)
to enable the use of class 2 functions. The status bit of
the scaling function is set when the scaling function is
activated and the resolution of the encoder is calculated
by means of the scaling parameters.
DDLM_Slave_Diag
Octet 9
Bits 7-0
Operating status
Bits Definition =0 =1
0 Code sequence Increasing position
values for clockwise
revolutions (Seen from
flange side)
Increasing position
values for counter
clockwise revolutions
(Seen from flange side)
1 Class 2
functionality
No, not supported Yes
2 Commissioning
diagnostics
No, not supported Yes
3 Scaling function
status
Scaling disabled Scaling enabled
4-7 Currently not assigned
Table 23 Operating status