Omron NX-EC0112, User Manual

Page: 44 / 468

1 Features and System Configuration
1 - 8 NX-series Position Interface Units User’s Manual (W524)
Some of the functions of the Position Interface Units are based on the CiA402 drive profile.
The I/O data definitions and operations for interaction with the Controller are based on functions in the
CiA402 drive profile. However, the indexes and subindexes in the object dictionary are not the same.
The following table describes the relationships between functions of the Units and the functions in the
CiA402 drive profile.
1-1-4 Control Data for Position Interface Units
Relationship between the Position Interface Unit Functions and the
CiA402 Drive Profile
Unit
Function of
Position Inter-
face Unit
CiA402
function
Description
Incremental
Encoder Input Units Latch function Touch probe The latch function and latch status that are used as
I/O data for the Incremental Encoder Input Units both
contain data definitions equivalent to the touch probe
function and touch probe status.
*1
*1. Refer to 6-9-8 Latching on page 6-59 for details on this operation.
SSI Input Units --- --- These Units have no functions that are the same as
the CiA402 drive profile.
Pulse Output Unit Pulse output
control Control in
Cyclic Synchro-
nous Position
Control Mode
*2
*2. Refer to 8-3 Pulse Output Control on page 8-5 for details.
The pulse output control from the Controller is the
same as control in Cyclic Synchronous Position Con-
trol Mode of the CiA402 drive profile.
The control commands that are sent to the Pulse Out-
put Unit are sent with the Controlword and command
position each control period. The control status is
monitored through the Statusword.
These are equivalent to the following data definitions
in the CiA402 drive profile: Controlword, Target Posi-
tion, and Statusword.
Latch function Touch probe This is the same as for an Incremental Encoder Input
Unit.
*3
*3. Refer to 8-10-5 Latching on page 8-61 for details on this operation.