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4.5.6
Reserved bits for fine resolution
"Additional substitute bits for fine resolution" parameter
The "Additional substitute bits for fine resolution" parameter specifies the desired pulse
multiplication of the encoder increments transmitted in actual encoder values G1_XIST1 and
G1_XIST2.
G1_XIST1
Presently, the number of additional substitute bits for fine resolution must be set permanently
to "11". This corresponds to a pulse multiplication of: 2
Note
Presently, the "Reserved bits for fine resolution" parameter setting must always be set to "11".
G1_XIST2
The number of additional substitute bits for fine resolution is set permanently to "1" and cannot
be changed.
Absolute position values supplied in G1_XIST2 are never provided with a number of reserved bits
for fine resolution. They are always supplied as they were read from the SSI encoder.
4.5.7
611U conformant mode
Possible settings
In 611U conformant mode, the signal source for homing of axes is no longer specified using the
PROFIDrive standard message frame (STD3, encoder control word G1_STW), but rather using
the additional digital output word in the PROFIBUS message frame of the ADI4 (see table
"Message frame structure" in Section "Message frame type (Page 45)").
611U conformant mode:
• Not selected
The signal source for homing is specified via the encoder control word Gx_STW in the
PROFIDrive standard message frame.
• Selected
The signal source for homing is specified via the additional digital output word in the
PROFIBUS message frame.
SIMOTION ADI4 - Analog Drive Interface for 4 Axes
Equipment Manual, 07/2017, A5E33446849B
Parameter assignment
4.5 Function parameters
= 2048.
11
55
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