Parameter Assignment
4-2
IM 178-4
C79000-G7076-C178-01
Note
In slot 4, configure one of the proposed technology slots:
S
Q4 words / I12 words:
Word consistency in the Q and I areas
S
Q4 words / I12 words consistent (standard situation):
Word consistency in the Q area, consistency over the entire I area
If you only require the less significant 16 bits of the actual position value, you can
also select “Q4 words / I12 words” .
Requirements for Parameter Assignment with a Parameter Assignment Frame
To assign parameters to the IM 178-4 using a parameter assignment frame, you
must know how the configuration and parameter assignment frames are
structured. This is explained in Appendix C.
Parameter Assignment
Each DP standard slave receives its parameters from the DP master when it starts
up itself or when the master is started.
Successful parameter assignment is indicated by the value TRUE in the PARA
status bit for each channel. A parameter assignment error is indicated by FALSE in
the PARA status bit and an entry in the slave diagnostic data if this is enabled.
The diagnostic LED remains lit until both channels have been assigned error-free
parameters.
Until parameter assignment is successful, the inputs for the actual position value
and actual reference value have the value 0.
The parameters cannot be read back from the module.
