Delta RMC101 - Manual (Page 554)

RMC100 and RMCWin User Manual
6-10
scale:
Scale Divisor Effective
Scale Error from
6324.70
6325 1 6325/1 =
6325 0.005%
12649 2 12649/2 =
6324.5 0.003%
25299 4 25299/4 =
6324.75 0.0008%
50598 8 Invalid scale Invalid
Therefore, in this example, a Scale of 25299 and a Prescale Divisor of 4 should be used.
These calculations can be done automatically using the Position Scale/Offset Calibration Utility
feature in RMCWin.
Analog Input Ranges
See the COUNTS topic for detailed information on the maximum and minimum limits of the
various analog input ranges.
6.1.7 Setup Details
6.1.7.1 Using Analog Channels as Position Inputs
Analog channels may be configured to be used as one of two position input types:
• Position Control - The input is used with the corresponding drive output (analog modules without
drive outputs cannot be used for position control) for closed loop control. See Controlling Solely
Position, Pressure, or Force for details.
• Position Reference - The input is used without the drive output. The incoming counts are scaled
to position units, but otherwise the axis does no control. This is most often used for joysticks, in
which case another axis will be slaved to the movements of the joystick on a position reference
axis. See Using Position and Velocity Joysticks or Using an External Target Generator for details.
For both position inputs, all fields are used as described in the position status, command, and
parameter field topics. One field worthy of note is the Transducer Counts field. See the section
What to Expect in the Transducer Counts Field below for details.
When using Position Reference, the only parameters that are used are Configuration word,
Scale, Offset, Extend Limit, and Retract Limit. All others are ignored.
Use the following steps to configure an analog position input:
Step 1: Assign Analog Channel(s) to be Position Input(s)