Voltage

Type:	Axis Status Register
Address:	RMC75: Primary Input: %MDn.11, where n = 8 + the axis number Secondary Input: %MDn.26, where n = 8 + the axis number RMC150: Primary Input: %MDn.11, where n = 8 + the axis number Secondary Input: %MDn.26, where n = 8 + the axis number RMC200: Primary Input: %MDn.26, where n = 256 + the axis number Secondary Input: %MDn.86, where n = 256 + the axis number
System Tag:	Primary Input: _Axis[n].Voltage Secondary Input: _Axis[n].SecVoltage where n is the axis number
How to Find:	Axes Status Registers Pane, All tab: Feedback
Data Type:	REAL
Units:	Volts

Description

The Volts register is the voltage feedback from an analog transducer. It is derived from the raw counts register, which for the RMC75/150 is the value from the analog-to-digital converter, and for the RMC200 is the filtered value (see Analog Input Filter) from the analog-to-digital converter. The Voltage register is primarily for the user to set up and troubleshoot scaling.

The Voltage register is for axes with voltage feedback. The Current register is for axes with current feedback. Axes with other feedback types do not have a Current or Voltage register; they have a Counts register.

The RMC derives the Voltage 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.

Module	Range	Formula (approximate)	Saturates	No Transducer	Transducer Overflow
RMC75
AA1, AA2, A2, AP2	±10 V	RawCounts x 10.125 V / 32,768 raw counts	at ±10.125 V	n/a	beyond ±10.1 V
RMC150
A, G, H	±10 V	RawCounts x 10.0 V / 32,500 raw counts	at ±10.08 V	n/a	beyond ±10.08 V
A, H	±5 V	RawCounts x 5.0 V / 32,500 raw counts	at ±5.04 V	n/a	beyond ±5.04 V
UI/O	±10 V	RawCounts x 10.125 V / 32,768 counts	at ±10.125 V	n/a	beyond ±10.1 V
RMC200
A8	±10 V	RawCounts x 10.5 V / 2,147,483,648 raw counts	at ±10.5 V	Differential voltage < -10.5 V and either In+ or In- is out of range (see A8 specification)	Beyond Analog Underflow Limit or Analog Overflow Limit, or saturated at maximum differential voltage, or either In+ or In- is out of range (see U14 or A8 specification)
U14	±10 V	RawCounts x 10.2 V / 2,147,483,648 raw counts	at ±10.2 V	Differential voltage < -10.2 V and either In+ or In- is out of range (see U14 specification)