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8-1
Alarm Indicators
The ALARM/ERROR indicator on the front of the CPU provides visual indica-
tion of an abnormality in the PC. When the indicator is ON (ERROR), a fatal
error (i.e., ones that will stop PC operation) has occurred; when the indicator
is flashing (ALARM), a nonfatal error has occurred. This indicator is shown in
2-1 Indicators.
Caution The PC will turn ON the ALARM/ERROR indicator, stop program execution,
and turn OFF all outputs from the PC for most hardware errors, for certain
fatal software errors, or when FALS(07) is executed in the program (see ta-
bles on following pages). PC operation will continue for all other errors. It is
the user’s responsibility to take adequate measures to ensure that a hazard-
ous situation will not result from automatic system shutdown for fatal errors
and to ensure that proper actions are taken for errors for which the system is
not automatically shut down. System flags and other system and/or user-pro-
grammed error indications can be used to program proper actions.
8-2
Programmed Alarms and Error Messages
FAL(06), FALS(07), and MSG(46) can be used in the program to provide
user-programmed information on error conditions. With these three instruc-
tions, the user can tailor error diagnosis to aid in troubleshooting.
FAL(06) is used with a FAL number other than 00, which is output to the SR
area when FAL(06) is executed. Executing FAL(06) will not stop PC operation
or directly affect any outputs from the PC.
FALS(07) is also used with a FAL number, which is output to the same loca-
tion in the SR area when FALS(07) is executed. Executing FALS(07) will stop
PC operation and will cause all outputs from the PC to be turned OFF.
When FAL(06) is executed with a function number of 00, the current FAL
number contained in the SR area is cleared and replaced by another, if more
have been stored in memory by the system.
When MSG(46) is used a message containing specified data area words is
displayed onto the Programming Console or another Programming Device.
The use of these instructions is described in detail in Section 5 Instruction
Set.
8-3
Reading and Clearing Errors and Messages
System error messages can be displayed onto a Data Access Console, as
well as the Programming Console or other Programming Device.
On the Programming Console, press the CLR, FUN, and MONTR keys. If
there are multiple error messages stored by the system, the MONTR key can
be pressed again to access the next message. If the system is in PROGRAM
mode, pressing the MONTR key will clear the error message, so be sure to
write down all message errors as you read them. (It is not possible to clear
an error or a message while in RUN or MONITOR mode; the PC must be in
PROGRAM mode.) When all messages have been cleared, “ERR CHK OK”
will be displayed.
Details on accessing error messages from the Programming Console are
provided in 7-1 Monitoring Operation and Modifying Data. Procedures for the
GPC, LSS, and FIT are provided in the relevant Operation Manuals.
Reading and Clearing Errors and Messages
Section 8-3
Summary of Contents for SYSMAC C200H
Page 1: ...OPERATION MANUAL C200H CPU01 E 03 E 11 E SYSMAC Programmable Controllers Cat No W130 E1 05 ...
Page 2: ...C200H Programmable Controllers CPU01 E 03 E 11 E Operation Manual Revised June 2003 ...
Page 3: ...iv ...
Page 5: ...vi ...
Page 8: ...TABLE OF CONTENTS ix Glossary 345 Index 363 Revision History 369 ...
Page 342: ...336 Programmer Program Date Page Word Contents Notes Word Contents Notes Data Storage ...
Page 374: ...Cat No W130 E1 05 C200H Programmable Controllers CPU01 E 03 E 11 E OPERATION MANUAL ...