National Instruments FP-3000 User Manual

Page 123

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Appendix F

Troubleshooting

© National Instruments Corporation

F-5

FieldPoint FP-3000 User Manual

Block will not leave

OOS

(Out of

Service) mode, and

BLOCK_ERR

parameter reads

Block

Configuration Error

.

Make sure you have written a non-

OOS

mode to the

TARGET

mode of the block.

Look at the

MSG

field of the parameter

LAST_BLOCK_EVENT

on the block in question. This

contains details on why the block cannot leave

OOS

mode.

If this field is blank, the block might not be scheduled to
execute; function blocks must be scheduled to change
modes. Refer to your configuration software
documentation for information about how to download a
configuration, including a schedule, to a device. If you are
using the NI-FBUS Configurator, you can also refer to
Chapter 3,

Example Applications

, for information on

downloading a configuration.

If this field has a message, the message tells you which
parameter of the block is misconfigured. Look up the
correct use of the parameter in the Chapter 4,

Block

Reference

, Appendix B,

Fieldbus Parameters

, or your

device documentation, and reconfigure the parameter.

Block leaves

OOS

mode but will

not go into the exact

TARGET

mode.

Your block is correctly configured, but some run-time
condition is keeping the block from reaching its target mode.

If your block is connected to other function blocks as part
of a function block application, check the status of the input
parameters. If you are using the NI-FBUS Configurator,
either look at the appropriate parameter (

IN

,

CAS_IN

,

BKCAL_IN

, etc.) in the block configuration window (with

periodic updates on) or use the Monitor functionality as
described in the NI-FBUS Configurator User Manual. If
any of these have a quality of

Bad

or

Uncertain

, examine

the blocks the inputs came from to determine the problem.

If this block is not connected to other function blocks, but
is operating standalone, check the

BLOCK_ERR

parameter

to determine the problem. If

BLOCK_ERR

reports Input

Failure or Output Failure, and this is an AI, AO, DI, DO, or
CDO block, there is likely a problem with the I/O channel.
For more information, refer to the section

I/O Module

Problems

.

Table F-3. Generic Software Configuration Problems (Continued)

Problem

Solutions

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