Omron NX-ID - Features and Types of Digital I;O Units; Digital I;O Unit Features

1 Features and System Configuration
1 - 2
NX-series Digital I/O Unit User’s Manual (W521)
1-1 Features and Types of Digital I/O
Units
This section describes features and types of Digital I/O Units.
The Digital I/O Units are NX Units to process inputs and outputs of digital signals (ON/OFF signals).
The NX-series Digital I/O Units have the following features.
NX Unit NX-series Digital I/O Units can be connected to the following Units.
*1
• NX-series CPU Unit
• NX-series Communications Coupler Unit
When a CPU Unit and a Communications Coupler Unit are used together, you can unify the methods
for installing, wiring, and setting up NX Units, and eventually reduce design costs.
*1. For whether NX Units can be connected to the CPU Unit or Communications Coupler Unit to be used, refer to
the user's manual for the CPU Unit or Communications Coupler Unit to be used.
When the NX-series CPU Units or EtherCAT Coupler Unit is used together with NX Units that support
synchronous I/O refreshing, the I/O control of multiple NX Units can be synchronized at the time to syn-
chronize with the refresh cycle of the NX bus.
This provides an accurate I/O control because it suppresses jitter in the I/O timing of multiple NX Units.
1-1-1 Digital I/O Unit Features
Can be Connected to a CPU Unit or Communications Coupler Unit
Synchronous I/O with Refresh Cycle of the NX Bus
NX Units: e.g., NX-series Degital I/O Units
NX-series EtherCAT Coupler Unit
NX-series NX1P2 CPU Unit
Example: