Omron NY532-1500 User Manual page 102

5 Motion Control Parameters
Axis Numbers
The number that you can set for axis numbers is the maximum number of controlled axes. The number
of real axes that you can change to used axes is the maximum number of used real axes.
Item
Settable axis numbers
Maximum number of
used real axes
Axis Types
The following table describes the different axis types that you can select in the Axis Type parameter.
Axis type
Servo axis
Virtual servo axis
Encoder axis
Virtual encoder axis
*1 Refer to 1-4-3 Function Specifications for the controllable devices.
*2 Virtual encoder axes are used in combination with motion control instructions that update the actual position of
the virtual encoder axis.
 Virtual Servo Axes
A virtual servo axis does not have a physical encoder or external I/O signals. Therefore, virtual
servo axes differ from servo axes in the following ways.
• They are always in Servo ON state.
• The actual current position equals the command current position.*
• The actual current velocity equals the command current velocity.*
• External input signals cannot be used.
• If the MC_Home or MC_HomeWithParameter instruction is executed, the instruction is processed
as a zero position preset regardless of the setting of the Homing Method axis parameter.
• If a motion control instruction that uses a latch function is executed, you must set the trigger input
condition to Controller Mode. An error does not occur if you set it to Drive Mode, but a latch trigger
will not occur, so execution of the instruction will not end.
Latches are used by the following instructions: MC_TouchProbe (Enable External Latch),
MC_MoveFeed (Interrupt Feeding), MC_MoveLink (Synchronous Positioning), and other instruc-
tions.
• Errors do not occur for immediate stop inputs or positive/negative limit inputs because the input
signals do not exist.
* However, there is sometimes calculation error because processing is performed with long reals in the MC Func-
tion Module.
5-8
NY52-5 NY52-4 NY52-3
0 to 63 0 to 31
64 axes 32 axes
These axes are used by the EtherCAT slave Servo Drives and NX-series Position
*1
Interface Units. They are assigned to actual Servo Drives or other devices.
One Servomotor is used as one axis.
If you use NX-series Position Interface Units, you can assign more than one device,
such as a Pulse Output Unit and Digital Input Unit, to the same axis.
These virtual axes exist only inside the MC Function Module. They are not used by
actual Servo Drives. For example, they are used as master axes for synchronizing
control.
These axes are used by the EtherCAT slave Encoder Input Terminals and NX-
series Position Interface Units.
input terminal or other device.
If one encoder input terminal contains two counters, each counter will act as one
axis.
These virtual axes are used for encoder operation. A virtual encoder axis is used
temporarily in place of an encoder axis when there is no physical encoder.
NY-series Industrial Panel PC / Industrial Box PC Motion Control User's Manual (W559)
0 to 15
16 axes
Description
*1
An encoder axis is assigned to an actual encoder
*2