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1 Introduction to NX-series Controllers
NX-series NX1P2 CPU Unit Hardware User’s Manual (W578)
1-1 The NX-series Controllers
1
1-1-1 Features
Support for EtherCAT Slave Terminals
You can use EtherCAT Slave Terminals to save space. You can also flexibly build systems with the
wide variety of NX Units.
Achieving a Safety Subsystem on EtherCAT
You can use NX-series Safety Control Units to integrate safety controls in a sequence and motion
control system as a subsystem on EtherCAT.
Standard-feature EtherNet/IP Communications Port
A CPU Unit provides an EtherNet/IP communications port for EtherNet/IP communications as a
standard feature.
EtherNet/IP is a multi-vendor industrial network that uses Ethernet. You can use it for networks
between Controllers or as a field network. The use of standard Ethernet technology allows you to
connect to many different types of general-purpose Ethernet devices.
Built-in I/O Available
The Controller has the built-in I/O. You can connect small I/O devices inside the control panel at a
low cost.
NX-series Units Connectable
The CPU Unit can be connected with up to eight NX Units including NX-series Digital I/O Units, Ana-
log I/O Units, and other I/O Units.
Precautions for Correct Use
You cannot mount NX-series Safety Control Units on the CPU Unit and use them. Use
NX-series Safety Control Units as a subsystem on EtherCAT.
Option Boards Connectable
The CPU Unit can be connected with one or two Option Boards to add the serial communications or
analog I/O function.
The Serial Communications Option Board enables you to connect general-purpose components
such as a bar code reader.
The Analog I/O Option Board allows inputs from devices such as variable resistors, process-control
sensor, and inverter control.
Battery-free Operation
The following data (other than the clock data) is retained in the built-in non-volatile memory.
• User program
• Set values
• Variables retained during power interruption
• Event logs
The retention period for the clock data is limited
*1
.
When the clock data is not needed or the equipment’s power OFF time is shorter than the clock data
retention period, the battery-free operation is possible and man-hours for battery replacement can
be reduced.
If you turn OFF the power supply to the equipment for a longer period of time than the clock data
retention period, mount a battery which is sold separately.
*1. Approximately 10 days at an ambient temperature of 40°C. Refer to 3-1-5 Battery on page 3-16 for detail.
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