Delta RMC151 - Manual (Page 945)

9 Register Reference
• St/St Rising
The MDT feedback is Start/Stop, measured on the rising edge.
• St/St Falling
The MDT feedback is Start/Stop, measured on the falling edge.
• PWM
The MDT feedback is Pulse Width Modulated.
Changing this Parameter
Because this parameter affects motion, the axis must be disabled or in Direct Output
before writing to this parameter. The Enabled and Direct Output Status Bits indicate these
states of the axis. When changing this parameter from RMCTools, the software will
automatically do this for you. This may cause a halt on the axis, which is expected.
Format Details
This section is primarily for addressing the MDT Type parameter when communicating
with the RMC from an external device. This information is not necessary when configuring
the MDT Type in RMCTools.
The MDT Type is selected with bits 0-2 in the MDT/SSI Configuration Register. These bits
correspond to the MDT Type as shown in the following table:
Bit 2 Bit 1 Bit 0 Value MDT Type
0 0 0 0 Start/Stop Rising
0 0 1 1 Start/Stop Falling
0 1 0 2 PWM
See the MDT/SSI Configuration Register for details about the register containing these
bits.
9.2.2.2.23.3. MDT Blanking Parameter
Type: Axis Parameter Register
RMC150 Address: %MDn.10/3, where n = 24+ the axis number
System Tag: _Axis[n].MDTSSICfg.MDTBP, where n is the axis number
How to Find: Axes Parameters Pane, All tab: Feedback
Data Type: boolean
Range: 5µs (0), 21µs (1)
Default Value: 5µs (0)
Description
The MDT Blanking Period parameter specifies the amount of time that the MDT input
waits after the start pulse before looking for the stop pulse. This parameter is valid only
on RMC150 axes with MDT feedback.
Typically, this parameter should be left at its default setting. For older Temposonics I and
II transducers with a neuter output, this parameter needs to be set to 21µs, since the
start pulses contain ringing that lasts longer then the default 5µs.
The RMC70 blanking period is fixed at 5µsec. Transducers that require the longer 21µsec
blanking period will require using the RMC150.
Changing this Parameter
Because this parameter affects motion, the axis must be disabled or in Direct Output
before writing to this parameter. The Enabled and Direct Output Status Bits indicate these
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