74
Operation
Theory
are extremely useful in protecting a user’s mechanical system, as
it can operate as a physical limit switch, when configured correctly.
The software limit works because the DSP of the SSCNET board
compares the current feedback position with the setting of the soft-
ware limit value every SSCNet cycle. Once the feedback position
is over the software limit, it stops the axis just as the PEL/MEL sig-
nals would. set_soft_limit() is used to configure the software limit.
X
‘
PLimit
’ is used for software limit values in the positive
direction.
X
‘
MLimit
’ is used for software limit values in the negative (or
minus) direction.
X
‘
ON_OFF
’ is used to enable/disable the software limit func-
tion.
Users can read back current software limit setting using the
get_soft_limit() function.
4.5.5
Motion Status
In this section, the following functions are discussed.
axis_status(Axis,*AxisStatus)
motion_status(Axis, *MotionStatus)
Axis status
The function call axis_status() is used to retrieve the servo driver’s
control status information. The parameter ‘Axis’ applies to the
specified axis.
X
‘
AxisStatus
’ – the control status of servo driver.
Bit
Name
Value & Description
0
Not_In_Control
1: Axis not in control
0: Axis is in control
1
In_Servo_Alarm
1: Axis is in servo alarm
0: Axis is not in servo alarm
2
Not_Ready_ON
1: Axis not Ready ON
0: Axis is Ready ON
Table 4-3: Axis Status
Summary of Contents for PCI-8366+
Page 4: ......
Page 14: ...x List of Figures ...
Page 17: ...Introduction 3 Figure 1 3 Flowchart for Building an Application ...
Page 26: ...12 Installation 2 2 PCI 8372 8366 Outline Drawing Figure 2 1 PCI 8372 8366 Mechanical Drawing ...
Page 31: ...Installation 17 2 Press HPI boot ...
Page 32: ...18 Installation 3 Press Flash DL button and select a kernel4 hex ...
Page 34: ...20 Installation Figure 2 3 SSCNET Communication Test Utility ...
Page 49: ...Signal Connections 35 Figure 3 9 Skin Type ...
Page 144: ...130 Operation Theory ...
Page 149: ...Motion Creator 135 Figure 5 6 Software Version Information ...
Page 160: ...146 Motion Creator Figure 5 13 Channel Selection Frame Figure 5 14 Motion Frame ...