Analog I/O Status Screen
The Analog I/O Status Screen displays various analog measurements and commands including:
- Kanalog DAC Settings
- Kanalog ADC Readings
- SnapAmp Measured current flow per motor coil
- SnapAmp Power Supply Voltages
- SnapAmp Mosfet Temperatures
- SnapAmp PWM power amp settings
KFLOP itself has no Analog capability and when operated alone with no option cards the Analog I/O Screen will not display. If one or two SnapAmp option boards are installed and checked on the option menu, tabs will allow display of SnapAmp Status. Current measurement for each full bridge (motor coil), Power supply voltage for each side, Temperature of each side, and PWM setting for each PWM. If Kanalog is installed and checked on the option menu a tab will allow displaying Kanalog Analog Status.
The state of each SnapAmp's four PWM (Pulse Width Modulators) are displayed in the top right area of the status screen. The PWM's are connected to Full Bridge Drivers to allow direct control of various motors or loads. See the description of KMotion's Power Amplifiers and PWM's for details. The PWM's may operate independently to drive a full bridge driver, or they may function as a pair of PWM's connected to a pair of Full Bridge drivers to drive a 4 phase stepper motor or a 3 phase load.
PWMs may be assigned to an axis by changing the OutputChan0 and OutputChan1 parameters for an axis. Only consecutive even and odd PWMS may be paired to drive a 3 or 4 phase phase load./p>
There are several possible modes for each PWM channels:
- Normal Independent
- Recirculating Independent
- 3 Phase - paired
- Current Feedback
If a PWM channel is operating in Normal mode, the PWM channel status will show the value in counts (-255 ... +255) and the percent of full scale.
If a PWM channel is operating in Recirculating mode, the PWM channel status will show the value in counts (-511 ... +511), followed by an "R", and the percent of full scale.
A PWM channel may also operate in current loop mode. In current loop mode the PWM duty cycle is automatically adjusted in order to maintain the commanded current. The PWM channel status will show the command value in counts (-4095 ... +4095), followed by a "C", and the percent of full scale.
If a pair of PWM channels is operating in 3 Phase mode, the PWM channel status will show the value in counts (-230 ... 230) after the first PWM channel and the phase angle in degrees after second PWM channel.
The example status below shows PWM channels 8 and 9 operating in 3 phase mode, PWM channel 10 operating in Normal mode, and PWM channels 11 operating in Recirculating mode.