Omron OMNUC W Series Manual page 16

1.3 Basic Functions and Function Outlines
The DeviceNet Unit provides the following functions.
Move No-opera-
tion
commands
Operation
Setting/reading Parameter Read Command
commands
Parameter Write Command
Present Position Setting
Command
Origin Setting Command
Alarm Read Command
Monitor Mode Read Command
Unit Reset Command
Other functions Tracing
Backlash compensation
Deceleration stop
Absolute encoder support
Software limits
Linear axis/rotary axis setting
Function
JOG Command Moves the axis in the specified direction at the specified speed.
Step Command Moves the axis the specified amount in the specified direction.
Station
This command can be used when the DeviceNet Unit is being used as a
Command rotary axis. One rotation of the motor is divided into the specified num-
ber of stations and the axis is positioned at the specified station.
Point Table Moves the axis to a target position specified in the point table at the tar-
Command get speed.
Origin Search Determines the origin using the specified origin search mode.
Command
Direct Operation Moves the axis to the specified target position.
Command
Interrupt Feeding Move the axis the specified amount when a change occurs in the exter-
Command nal signal status during axis movement.
Notch Output Outputs a notch signal when the specified position is passed during axis
Positioning movement.
Command
Multi-speed Posi- Changes the speed in stages and moves the axis to the specified posi-
tioning Command tion.
Reads user parameters from the Servo Driver and DeviceNet Unit.
Writes user parameters to the Servo Driver and DeviceNet Unit.
Resets the present position of the motor to a specified position.
When using an absolute encoder, sets the present position of the motor
as the origin.
Reads up to the most recent three alarms that have occurred in the Servo
Driver or DeviceNet Unit.
Reads the monitor mode (Unxxx) displayed on the Servo Driver.
Saves the user parameters in the DeviceNet Unit to flash ROM and then
restarts the Servo Driver and DeviceNet Unit software.
Reads accumulated trace data using Explicit Messages from a PC or
personal computer.
Compensates for play in the mechanical system.
Decelerates the axis to a stop using a Cancel or Hold Command during
axis movement.
An OMNUC W-series Servomotor with an absolute encoder can be
used. Using an absolute encoder eliminates the need for origin searches,
reducing system startup time.
Positioning positions can be monitored in the software separately from
limit input signals to prevent or reduce damage to external devices
resulting from unexpected positioning operations caused by operating
errors.
The DeviceNet Unit can be set for application as a linear axis or as a
rotary axis.
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1.3 Basic Functions and Function Outlines
Outline
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