Omron SYSMAC CS Series User Manual

227
Errors and Alarm Troubleshooting Section 7-1
7-1-3 Errors during Normal Operation
LED Indicators
on front of
Loop
Controller
LED
Indicator on
front of CPU
Unit
Problem Cause Status Error
code
(Stored in
error log.)
Corrective action
RDY EXEC ERR/ALM
(See note.)
Lit Lit Not lit Normal
condition
Loop Controller operat-
ing normally.
--- None ---
Lit Not lit Not lit Normal
condition
The Board is stopped for
either of the following
reasons.
Normal stop of oper-
ation
--- None ---
CPU Unit is waiting. None Refer to the CPU Unit's
Operation Manual and
clear the CPU Unit's
waiting status.
Lit Lit Flashing
(Partial func-
tion block
database
(RAM) error
during sim-
plex opera-
tion, A42410
turns ON.)
Partial
function
block data-
base
(SRAM)
error during
simplex
operation
A partial function block
database (RAM) error
was detected in self-
diagnosis during opera-
tion in either duplex SPL
mode or simplex opera-
tion.
For only a partial data-
base error, operation
stops only for the rele-
vant function blocks
(nonfatal error).
0331
The details
code con-
tains either
the rele-
vant block
address or
FFF if all
data bases
have an
error.
Execute the Download
or Clear all operation
from CX-Process Tool
Version 3.0 or later.
The RAM Error Flag
(A42410) will go OFF if
the data in RAM
becomes valid.
Flashing
(Incompatible
Operation
Cycle Flag
(A42409)
turns ON.)
The Loop
Controller
is operat-
ing with a
high load
rate (error
during
duplex
operation
only).
(CS1D-CPU@@P only)
The cycle time is too
long (i.e., the CPU Unit’s
cycle time is more than
30% of the minimum
operation cycle of the
Loop Controller for three
consecutive cycles), so
there is error in the oper-
ation cycle of the Loop
Controller.
Operation continues
with a large error in the
operation cycle (nonfa-
tal error).
None Set a longer minimum
Loop Controller opera-
tion cycle (5 times the
CPU Unit cycle time or
longer).
Lit Lit Flashing
(A42408, the
Loop Control-
ler High Load
Flag, is ON.)
The Loop
Controller
is operat-
ing with a
high load
rate.
The LCB load rate
exceeded 80% continu-
ously for 6 seconds.
Operation continues
although the operation
cycle setting is
exceeded (non-fatal
error.)
None Adjust each function
block's operation cycle
so that the LCB load
rate is below 80%.
Another solution is to
add a Loop Control
Unit to the PLC and
shift some of the load
to that Unit.

Omron SYSMAC CS Series Specifications

General

Brand	Omron
Model	SYSMAC CS Series
Category	Controller
Language	English