IC695NIU001

What type of automation module is this?

It is an Ethernet Network Interface Unit designed for PACSystems RX3i remote I/O stations. It enables RX3i and selected Series 90-30 I/O modules to exchange data with a controller over an Ethernet-based control network.

What is the main function of an Ethernet Network Interface Unit?

Its main role is to act as a remote I/O station interface. Once configured, it automatically exchanges input and output data with a master controller, allowing distributed I/O to be placed away from the main control cabinet.

Which communication method is used for I/O data exchange?

The unit uses Ethernet Global Data exchanges for cyclic I/O communication. One exchange is typically used for outputs sent to the remote station, while another exchange sends inputs and status data back to the controller.

Does the module have built-in serial communication ports?

Yes. The unit includes two on-board serial ports: COM1 is RS-232 compatible and COM2 is RS-485 compatible. These ports can be used for serial devices and configuration-related communication tasks.

What serial protocols are compatible with the unit?

The serial ports can operate with protocols including Modbus RTU Slave, SNP Slave and Serial I/O. Modbus RTU Master operation can also be implemented through an application block.

What are the nominal power requirements?

The module requires 1.25 A nominal at 3.3 VDC and 1.0 A nominal at 5 VDC from the RX3i backplane.

What operating temperature range is specified?

The specified operating temperature range is 0°C to 60°C, equivalent to 32°F to 140°F.

How much I/O data can be exchanged?

Each Ethernet NIU can send up to 1300 bytes of input data to the controller, and a controller can send up to 1300 bytes of output data to a set of Ethernet NIUs.

Does the unit include memory for local data storage?

Yes. It includes 10 MB of battery-backed CMOS RAM for local data storage and 10 MB of built-in flash memory for local user data storage.

What does the battery do in this module?

The lithium battery pack maintains data memory when power is removed and also powers the calendar clock. The associated battery indicator can show low or missing battery conditions.

Where is the unit installed in an RX3i system?

It is installed in an RX3i universal backplane and occupies two slots. It can be located in backplane 0, but it cannot be installed in the highest-numbered rightmost slot of a 12-slot or 16-slot backplane.

What do the front LEDs indicate?

The front LEDs indicate operating and diagnostic states such as NIU OK, I/O scanning, outputs enabled, I/O force, battery condition, system fault and serial port activity.

Can it be used with redundant controllers?

Yes. The Ethernet NIU is designed to operate with redundant controller arrangements, including the ability to receive outputs from redundant controllers and send input data to a group address.

What is the commodity code for customs classification?

The commodity code recorded for this Network Interface Unit is 853710, which is commonly used for electrical control or distribution boards, panels, consoles and similar control equipment.