Front Panel Diagnostic LEDs

Introduction

The state of the module is indicated by 4 LEDs in the upper display panel: RUN, ERR, A/B and I/O. Their state, Off, On or Flashing, provides information about the operating mode of the module.

The /B LED indicates which bank is displayed.

The LEDs 0 to 31 provide information about each slave on the bus at the indicated address.

Two additional LEDs labeled ASI PWR and FAULT provide information about the AS-Interface power supply and detected errors on the bus or a slave.

RUN, ERR and I/O LEDs

The combinations of these RUN (green), ERR (red) and I/O (green) LEDs indicate the different states of the module:

RUN	ERR	I/O	Status of Module
Off	Off	Off	Under-voltage or LEDs non-functional
Flashing	Off	Off	Waiting for the module configuration download
Flashing	Flashing	Flashing	Self tests
Off	Flashing	Off	Module is not correctly configured
On	Off	Off	Normal running mode (in the Protected Mode with data exchange on the bus)
Off	On	Off	Detected internal module error
On	Off	On	Detected error in the AS-Interface application (bus or slave)
On	Flashing	Off	Communication error detected with the PLC

/B LED

This green LED indicates which bank the LEDs 0 to 31 represent:

A/B	Slaves Displayed
Off	Bank A (standard and extended slaves)
On	Bank B (only extended slaves)

LEDs 0 to 31

These green LEDs provide information about the slaves with addresses 0 to 31 on the AS-Interface bus:

Slave Address LED	Slave Status
Off	Slave not configured and not detected
On	Slave active (configured, detected and activated)
Flashing Slow	Peripheral error detected on slave
Flashing Fast	A detected slave configuration error: Slave configured but not detected Slave detected but not configured Slave detected and configured but not active Profile is not the same as the one declared

NOTE: To access detailed information about a slave with a detected error, connect a programming tool to the slave. The module LEDs only indicate that there is a anomaly in the slave.

ASI PWR LED

This green LED provides information about the voltage on the AS-Interface bus:

ASI PWR	AS-Interface Power Supply Status
Off	Voltage level is not correct
On	Voltage level is correct

FAULT LED

This red LED provides information about the AS-Interface bus:

FAULT	AS-Interface Bus Status
Off	OK
On	Detected AS-Interface bus error: No data exchange with 1 or more slaves In OFFLINE Mode Module is not ready for normal AS-Interface bus operation
Flashing	Detected periphery error on 1 or more slaves

NOTE: In case of simultaneous “no data exchange” and “periphery error”, the FAULT LED flashes, i.e., “periphery fault” has priority over “no data exchange”.

NOTE: A “periphery fault” is also indicated in the Module Fault tab on the module diagnostics page.