3 Product Description
16
Version: 1.2.1
MS249E
C-863.12 Mercury Controller
Parameters
Description and Possible Values
Denominator Of The
Counts-Per-
Physical-Unit Factor
0xF
of length for position queries and motion commands in closed-loop
operation.
The values of every parameter, whose unit is either the physical unit
of length itself or a unit of measurement based on it, are
automatically adapted to the set factor.
The factor for the counts per physical unit of length has no impact
on the stability of the servo loop but is used for the input and output
scaling of position values.
The unit symbol can be customized for display purposes with the following parameter:
Parameters
Description and Possible Values
Axis Unit
0x07000601
Unit symbol
Maximum of 20 characters.
For example, the unit symbol is "MM", if the factor for the counts
per physical unit of length is set with parameters 0xE and 0xF so that
the encoder counts are converted into millimeters. The unit for
rotation stages is normally "deg".
The value of the parameter 0x07000601 is not evaluated by the C-
863.12 but is used by the PC software for display purposes.
Examples:
1 encoder count = 100 nm
Counts per physical length unit: 10000:1
→ Unit symbol: mm
1 encoder count = 0.254 mm
Counts per physical length unit: 100:1
→ Unit symbol: inch