Rockwell-automation 1785-Lx0C15 ControlNet PLC-5 Programmable Controll Bedienungsanleitung PDF herunterladen (Seite 26)

Publication 1785-QS006C-EN-P - April 2002

4-4 Troubleshoot the Processor System

Indicator Color

Probable Cause Recommended Action

Off Internal diagnostics failed 1. Turn power off, make sure ControlNet address is

not 00, reseat processor, then power up

2. Clear memory and reload your program

3. Replace EEPROM with new program

4. If still an error, replace the processor

No power Check power supply

Steady Red Faulted unit Cycle power or reset unit

If fault persists, contact your Allen-Bradley Company,

Inc. representative or distributor

Flashing

Green

Normal operation if processor is in

FLASH memory program mode

No action required

Flashing

Red/Green

The processor’s ControlNet address

is above UMAX

Configure the ControlNet network so that UMAX is at

least as high as the processor’s ControlNet address.

Set the processor’s ControlNet address at or below

UMAX.

Alternating

Red/Green

Self-test No action required

Alternating

Red/Off

Incorrect node configuration Check network address and other ControlNet

configuration parameters

Off Channel disabled No action required

Configure for ControlNet communication

Steady

Green

Normal operation No action required

Flashing

Green/Off

Temporary errors No action required

Make sure that ControlNet is properly terminated

Flashing

Red/Off

Media fault Check media for broken cables, loose connectors,

missing terminators, etc.

No other nodes present on network Add other nodes to the network

Flashing

Red/Green

Incorrect network configuration Cycle power or reset unit

If fault persists, contact your Allen-Bradley Company,

Inc. representative or distributor

Definition of terms:

• alternating – the two indicators alternate between the two defined states at the same time (applies to both indicators

viewed

together

); the two indicators are always in opposite states, out of phase

• flashing – the indicator alternates between the two defined states (applies to each indicator

viewed independent

of the other); if both

indicators are flashing; they flash together, in phase

• steady – indicator is on continuously in the defined state

and

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