Axis - Limits configuration page

Configure the motion settings for the
Micro800
 controllers that support motion. Add an axis to create the axis configuration pages.
Use the
Axis<x> - Limits
 configuration page to:
  • Specify the stop behavior of the axis: immediate stop or deceleration stop.
  • Configure the hardware limits for the axis. The
    Hard Limits
     parameters correspond to the input signals that are received from hardware devices, such as limit switches and proximity sensors. The hardware input signals detect the presence of the load at the maximum upper and minimum lower extents of available motion for the load or movable structure that carries the load, such as a load tray on a transfer shuttle. The hardware parameters are then mapped to discrete inputs that are associated with data tags and variables.
  • Configure the software limits for the axis. The
    Soft Limits
     parameters correspond to the data values that are managed by the controller and are based on the user-defined stepper commands and the motor and load parameters that you specified on the Motor and Load configuration page.
Axis - Settings on Limits tab
Setting
Description
Hard Limits
When hard limit is reached, apply
Specifies the stop behavior of the axis:
  • Stop immediately
  • Stop after deceleration using the user-defined settings
The options are:
  • emergency stop profile
    Stops the axis after decelerating using the user-defined settings that you specified on the Dynamics page. This is the default setting.
  • force stop for PTO hardware
    Stops the axis immediately. To select
    force stop for PTO hardware
    , you must select
    Lower hard limit
     and
    Upper hard limit
    .
Lower hard limit
Makes the lower hard limit parameters available or not available for configuration. The parameters are available by default.
  • Active level
     specifies the active level of the input signal that is sent from a hardware device such as a switch. The default active level is
    Low
    .
  • Switch input
     is read-only and it specifies the wiring information for a hardware device.
Upper hard limit
Makes the upper hard limit parameters available or not available for configuration. The parameters are available by default.
Active level
 specifies the active level of the input signal that is sent from a hardware device such as a switch. The default active level is
Low
.
Switch input
 is read-only and it specifies the wiring information for a hardware device.
Soft Limits
Lower soft limit
Makes the
Lower soft limit
 parameter available or not available for configuration. It is not available by default.
You can make either the
Lower soft limit
 or the
Upper soft limit
 parameter available individually.
The value range is relative to the value that you specified for
Pulses per revolution
 on the Motor and Load configuration page. The default value for
Pulses per Revolution
 is
200.0
.
The default range for the value of
Lower soft limit
 is from –10732174 (–2146435072/200) through 10732174 (2146435072/200).
The range for the available values is from –2146435072 through 2146435072 steps represented in single precision floating point format.
The default value is 0.0 mm.
Upper soft limit
Makes the
Upper soft limit
 parameter available or not available for configuration. It is not available by default.
The value range is relative to the value that you specified for
Pulses per revolution
 on the Motor and Load configuration page. The
Upper soft limit
 value must be greater than the
Lower soft limit
 value.
The default range of the
Upper soft limit
 value is from –10732174 (–2146435072/200) through 10732174 (2146435072/200).
The range for the available values is from –2146435072 through 2146435072 steps represented in single precision floating point format.
The default value is 0.0 mm.
emergency stop profile
Goes to the Dynamics configuration page, where you can specify the emergency stop profile parameters.
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