Front Panel Components

Overview

This section contains a photograph of the front panel of the 170 ANR 120 90 I/O base and a description of the LEDs.

Front Panel Illustration

The front panel of the I/O base is shown in the illustration below.

Components of the I/O module

Label	Description
1	Internal interface (ATI) connector
2	Locking and ground contact for the adapter
3	LED status display
4	Protective cover
5	Sockets for the terminal connectors
6	Grounding screw
7	Busbar mounting slot
8	Locking tab for DIN rail mount
9	Mounting holes for panel mount

LED Illustration

The LEDs are shown in the illustration below.

LED Descriptions

The LEDs are described in the table below.

LED	Color	Status	Meaning
Ready	Green	ON	I/O base is communicating with the comm adapter/CPU top hat. CPU must be in RUN state.
O1, O2, O3, O4, O5, O6, O7, O8	Green	ON	Indicates the corresponding discrete output point is ON
I1, I2, I3, I4, I5, I6, I7, I8	Green	ON	Indicates the corresponding input point is ON
AO1, AO2, AO3, AO4	Green	ON	Indicates the corresponding analog output channel is active