Rockwell Automation Publication 2080-UM002G-EN-E - March 2015 71
Motion Control Chapter 7
Motion Wiring Input/Output Description
Motion Signals Input/Output Description Uniqueness
PTO pulse OUTPUT PTO pulse from the embedded fast output, to
be connected to Drive PTO input.
Not Shared
PTO direction OUTPUT PTO pulse direction indication, to be
connected to Drive Direction input.
Not Shared
Servo/Drive On OUTPUT The control signal used to
activate/deactivate Servo/Drive.
This signal becomes Active when
MC_Power (on) is commanded.
Can be shared
with more
than one drive
Lower (Negative)
Limit switch
INPUT The input for hardware negative limit switch,
to be connected to mechanical/electrical
negative limit sensor.
Not Shared
Upper (Positive)
Limit switch
INPUT The input for hardware positive limit switch,
to be connected to mechanical/electrical
positive limit sensor.
Not Shared
Absolute Home
switch
INPUT The input for hardware home switch (sensor),
to be connected to mechanical/electrical
home sensor.
Not Shared
Touch Probe Input
switch
INPUT The input for hardware touch probe signal, to
be used with Motion MC_TouchProbe and
MC_AbortTrigger function blocks to capture
axis commanded position during the motion
path.
Not Shared
Servo/Drive Ready INPUT The input signal that indicates Servo/Drive is
ready to receive PTO pulse and direction
signal from controller.
No moving function blocks can be issued to
an axis before the axis has this signal ready if
this signal is Enabled in the motion axis
configuration or axis properties page.
Can be shared
with more
than one drive
In-Position signal
(from Servo/motor)
INPUT The input signal that indicates the moving
part is in the commanded position. This
signal has to be Active after the moving part
reaches the commanded position for
MoveAbsolute and MoveRelative function
blocks.
For MoveAbsolute and MoveRelative
function blocks, when In_Position is enabled,
the controller will report an error
(EP_MC_MECHAN_ERR) if the signal is not
active within five seconds when the last PTO
pulse sent out.
Not Shared
Home Marker INPUT This signal is the zero pulse signal from the
motor encoder. This signal can be used for
fine homing sequence to improve the homing
accuracy.
Not Shared
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