Rockwell-automation 1769-IF16V Compact High Density Analog Input Modul Manuel d'utilisateur télécharger pdf (Page 50)

50 Publication 1769-UM018A-EN-P - October 2008

Chapter 4 Module Diagnostics and Troubleshooting

Non-critical vs. Critical

Module Errors

Non-critical module errors are typically recoverable. Channel errors

(over-range or under-range errors, process alarms, and open circuit

errors) are non-critical. Non-critical errors are indicated in the module

input data table.

Critical module errors are conditions that prevent normal or

recoverable operation of the system. When these types of errors

occur, the system typically leaves the run or program mode of

operation until the error can be dealt with.

Critical module errors are indicated in Error Codes

on page 51.

Module Error Definition

Table

Module errors are expressed in two fields as four-digit Hex format

with the most significant digit as don’t care and irrelevant. The two

fields are Module Error and Extended Error Information.

Module Error Field

The purpose of the module error field is to classify module errors into

three distinct groups, as described in the table below. The type of

error determines what kind of information exists in the extended error

information field. Refer to your controller manual for details.

Module Error Table

Don’t Care Bits Module Error Extended Error Information

1514 13 12 11109876543210

00 0 0 000000000000

Hex Digit 4 Hex Digit 3 Hex Digit 2 Hex Digit 1

Module Error Types

Error Type Module Error

Field Value

Bits 11…09

(Bin)

Description

No Errors 000 No error is present. The extended error field holds

no additional information.

Hardware

Errors

001 General and specific hardware error codes are

specified in the extended error information field.

Configuration

Errors

010 Module-specific error codes are indicated in the

extended error field. These error codes correspond

to options that you can change directly. For

example, the input range or input filter selection.

1 2 ... 45 46 47 48 49 50 51 52 53 54 55 ... 83 84

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