Rockwell Automation 1747-PTxx Getting Started Guide for HHT - Manual (Page 58)

A–B
B Appendix
Getting Started Guide
for HHT
B–1
Troubleshooting Errors
This appendix shows you how to identify and correct errors that you may
encounter while working through this guide. They include:
•
HHT error messages
•
System LED status
•
Processor error codes
The table below details error messages.
This Error
Message:
Appears when: Correct the Error by:
Change Processor
to Program Mode
You attempt to download a
program from the HHT to a
processor that is in RUN
mode.
Entering the MODE menu to change the processor
from the RUN to PROGRAM mode.
Default File in
Processor
You clear the processor
memory, which is then
automatically loaded with a
“Default” program.
Downloading a program from the HHT memory in
order to monitor controller operation.
Download Denied,
Compiler Errors
You attempt to download a
program saved with errors
(possibly I/O configuration
errors).
Going offline and checking the ladder program for
any discrepancies between the I/O configuration
and addresses used in the program. Either edit the
program and change the address to agree with the
configured I/O modules, or re–configure the I/O to
match the entered address. For the latter, refer to
chapter 3 for extra help. Important: You can SAVE
the program with errors (to correct at a later time),
but you cannot download the program to the
processor.
Error: Undefined
I/O Address
A mismatch exists between
the I/O addresses used in the
ladder program and the
configured I/O modules.
Either editing the program and changing the
address to agree with the configured I/O modules,
or re–configuring the I/O to match the entered
address. For the latter, refer to chapter 3 for extra
help. Important: You can SAVE the program with
errors (to correct at a later time), but you cannot
download the program to the processor.
Illegal Operand
An address that you entered
is not in the correct format. Refering to chapter 2, Control Basics, for proper
addressing format.
Illegal Network
You have a release of the
HHT memory pak (<2.0) that
does not support DH–485
network communications.
Obtaining an upgraded memory pak (release 2.0 or
greater) from your local Allen–Bradley Sales Office
or Distributor.
Incompatible
Processor Type
The processor that you have
configured in your program
does not match the processor
your HHT is communicating
with.
Going offline and changing the processor type in
the Processor Configuration. For extra help, see
chapter 3.
HHT Error Messages