Rockwell-automation 1336T Function Block Prog. Manual, Series A/B Instrukcja Użytkownika Pobierz pdf (Strona 163)

Chapter 6

6–1

1336 FORCE — 5.9 August 1995

Handling Exceptions — Faults and

Warnings

This chapter provides the following information:

❒ Handling function block faults and warnings

❒ Accessing the system fault and warning queues

❒ Handling download service errors

❒ Handling compiler faults

❒ Using the Task Status service

❒ Using the Fault Status service

❒ Fault codes

If there is a problem with your function block application, either a

fault or a warning will occur.

Function Block Faults

All function block faults are soft faults. Soft faults indicate that an

error has been detected that could damage drive components or the

motor. Soft faults may also indicate potential undesirable operation.

You cannot enable the drive if you have a soft fault condition.

You need to correct the problem that caused the fault before you can

clear the function block system fault with a clear faults command. If

you use a clear faults command before you correct the function block

problem, the function block fault will remain in the queue but the

other faults in the system queue will be cleared.

When the drive encounters a function block fault, the following

occurs:

❒ The drive disables the 20 millisecond task interval.

❒ The function block task status returns a faulted status value of

0xFF

Hex

when read.

❒ Word 4 of the function block fault read service is non–zero.

❒ An entry is logged in the system fault queue. You can view the

system fault queue from DriveManager.

Chapter Objectives

Handling Function Block

Faults and Warnings

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Rockwell-automation 1336T Function Block Prog. Manual, Series A/B Instrukcja Użytkownika Strona 163