Rockwell-automation 1761 MicroLogix 1000 Programmable Controllers Instrukcja Użytkownika Pobierz pdf (Strona 302)

Preface

MicroLogix 1000 Programmable Controllers User Manual

B–14

S:6 Major Error

Code

Status

A hexadecimal code is entered in this word by

the controller when a major error is declared.

Refer to S:1/13. The code defines the type of

fault, as indicated on the following pages. This

word is not cleared by the controller.

Error codes are presented, stored, and

displayed in a hexadecimal format.

If you enter a fault code as a parameter in an

instruction in your ladder program, you must

convert the code to decimal.

Application note: You can declare your own

application specific major fault by writing a

unique value to S:6 and then setting bit S:1/13.

Interrogate the value of S:6 in the user-fault

routine to determine the type of fault that

occurred.

Fault Classifications:

Faults are classified as

Non-User, Non-Recoverable, and Recoverable.

Error code descriptions and classifications are

listed on the following pages. Categories are:

• powerup errors

• going-to-run errors

• run errors

• download errors

NA = Not Applicable

Each fault is classified as one of the following:

• Non-User — A fault caused by various conditions that cease ladder program

execution. The user-fault routine is not run when this fault occurs.

• Non-Recoverable — A fault caused by the user that cannot be recovered from.

The user-fault routine is run when this fault occurs. However, the fault cannot

be cleared.

• Recoverable — A fault caused by the user that can be recovered from in the

user-fault routine by resetting major error halted bit (S:1/13). The user-fault

routine is run when this fault occurs.

Refer to chapter 14, Troubleshooting, for more information regarding programming

device advisory messages.

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