Current
Current
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Type: |
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RMC70 Address: |
Primary Input: Fn:11, where n = 8 + the axis number Secondary Input: Fn:26, where n = 8 + the axis number |
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RMC150 Address: |
Primary Input: Fn:11, where n = 8 + the axis number Secondary Input: Fn:26, where n = 8 + the axis number |
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System Tag: |
Primary Input: _Axis[n].Current Secondary Input: _Axis[n].SecCurrent where n is the axis number |
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How to Find: |
Axes Status Registers Pane, All tab: Feedback |
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Data Type: |
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Units: |
mA |
Description
The Current register is the current feedback from an analog transducer. It is derived from the raw counts register, which is the value from the 16-bit analog-to-digital converter. The Current register is primarily for the user to set up and troubleshoot scaling.
The Current register is for axes with current feedback. The Voltage register is for axes with voltage feedback. Axes with other feedback types do not have a Current or Voltage register; they have a Counts register.
The RMC derives the Current from the Raw Counts, which is the value from the Analog-to-Digital Converter. The calculations are listed below. These are approximate, as the analog calibration values are also included in the calculation. The levels at which the value saturates and certain errors occur are also included.
|
4-20mA Input Range |
Formula |
Saturates |
No |
Transducer |
|
RMC70 |
RawCounts x 20.0 mA / 16,384 counts |
at ±21.0 mA |
< 3.6 mA |
> 21.0 mA |
|
RMC150 A, G, H modules |
RawCounts x 20.0 mA / 32,500 counts |
at ±20.1 mA |
< 3.6 mA |
> 20.1 mA |
|
RMC150 UI/O module |
RawCounts x 20.0 mA / 16,384 counts |
at ±21.0 mA |
< 3.6 mA |
> 21.0 mA |
See Also
Copyright (c) 2005-2012 by Delta Computer Systems, Inc.