Excel 800Troubleshooting

Service LED of I/O Modules

Table 43. Service LED of I/O modules

case

Service LED

 

meaning

remedy

1

LED remains OFF after

 

If the power LED is also OFF, then

► Replace hardware

 

power-up

 

– Defective device hardware

 

 

 

 

– Possible power supply problems, clock

 

 

 

 

problems, defective processor

 

2

LED is lit continuously after

 

LONWORKS Bus I/O modules:

LONWORKS Bus I/O modules:

 

first power-up

 

– Defective hardware

► Replace hardware

 

 

 

Panel Bus I/O modules:

Panel Bus I/O modules:

 

 

 

– I/O module has not yet been configured

► Set the hex address to the position configured

 

 

 

by XCL8010AU

with CARE

 

 

 

– Boot loader is active

► Ensure that I/O Bus switch S2 of XCL8010AU is

 

 

 

– Failure during last firmware download

set to position "Panel"

 

 

 

► Check the Panel Bus wiring:

 

 

 

– Checksum error

 

 

 

- Check for cable breaks

 

 

 

 

 

 

 

 

- Check for cable short-circuits

 

 

 

 

- If using separate transformers: Check ground

 

 

 

 

connection

 

 

 

 

► Eliminate any mixture of Panel Bus I/Os and

 

 

 

 

LonWorks I/Os on same wire

 

 

 

 

► Allow XCL8010AU to configure I/O module

 

 

 

 

► Unplug and replug the module

 

 

 

 

► If problem persists, replace hardware

3

Alternating flash between

 

Panel Bus I/O modules, only:

► Panel Bus I/O modules, only:

 

service LED and power LED

 

Download error or application checksum error.

Wait until rebooting (firmware download) has

 

 

 

Boot loader is running

been completed

 

 

 

 

 

4

LED flashes at power up,

 

LONWORKS Bus I/O modules, only:

► Download application

 

goes OFF, and then is lit

 

LONWORKS Bus I/O module lacks application

 

 

continuously

 

 

 

5

LED repeatedly blinks

 

LONWORKS Bus I/O modules, only:

► Set module to configured mode

 

ON for 1 sec and

 

LONWORKS Bus I/O module is unconfigured, but

 

 

OFF for 1 sec

 

has an application

 

6

LED remains OFF after a

 

I/O module is configured and running normally

No action necessary

 

short ON duration

 

 

 

7

LED flashes continuously in

 

Sensor failure of Analog Input Module

► Check sensor or connection

 

following pattern:

 

(in case of LONWORKS Bus I/O modules, this

► Check sensor configuration

 

4 x ON/OFF followed by

 

behavior can occur only if the appropriate NV

 

 

pause

 

has been bound)

 

8

LED flashes continuously in

 

LONWORKS Bus I/O modules, only: LONWORKS

No action necessary

 

following pattern:

 

I/O Bus module has received the wink

 

 

5 x ON/OFF followed by

 

command from network, physical outputs are

 

 

pause

 

unaffected

 

9

LED flashes continuously in

 

Boot loader problem or hardware defect

► Replace hardware

 

following pattern:

 

 

 

 

6 x ON/OFF followed by

 

 

 

 

pause

 

 

 

10

LED flashes continuously in

 

Communications failure

► Check bus wiring

 

following pattern:

 

 

► Ensure that I/O Bus switch S2 of XCL8010AU is

 

7 x ON/OFF followed by

 

 

set to correct position

 

pause

 

 

► Ensure that LONWORKS Bus I/O modules and

 

 

 

 

 

 

 

 

Panel Bus I/O modules are not sharing same

 

 

 

 

bus

 

 

 

 

► In case of Panel Bus I/O modules, only:

 

 

 

 

Check for incorrect HEX addresses (2 Panel Bus

 

 

 

 

I/O modules using same HEX address)

 

 

 

 

► In case of LONWORKS Bus I/O modules, only:

 

 

 

 

Check heartbeat

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