Omron WS02-LCTC1-E - V2.60 REV 12-2003 Manual page 83

System Monitor Screens
Code Description
10 Operation process:
Division by "0"
11 Operation process:
Operation out of
restricted value
12 Argument beyond
definition
15 AT error
19 Inappropriate
operation
20 Download terminal
data exchange error
Explanation
An attempt was made to
execute division by a "0"
denominator in the
operation process.
An attempt was made to
execute division by a "0"
denominator in Arithmetic
Operation block (Block
Model 126).
The output value of the
operation result exceeded
the data length of two
bytes.
Note An error does not occur
even if the output
range (e.g., 320.00) is
exceeded if the data
length of two bytes is
not exceeded.
The arguments or results
for a Arithmetic Operation
block exceed the defined
limits.
An argument used in
Arithmetic Operation
(Block Model 126) is
beyond the definition.
A limit cycle cannot be
generated for Basic PID
(Block Model 011) or
Advanced PID (Block
Model 012) or suitable PID
constants cannot be
calculated.
Two or more S1 to S3
select switches are set to 1
(ON) at the same time in
the 3-output Selector block
(Block Model 163) or
3-input Selector block
(Block Model 164).
Data exchange with the
CPU Unit is not being
executed correctly on the
CPU Unit Terminal,
Expanded CPU Unit
Terminal, Node Terminals
and Field Terminal blocks.
Operation at Error
In the case of
Multiplication, DI/AI
Terminal from CPU Unit,
DI/AI Terminal from
Expanded CPU Unit or
Field Terminal blocks, the
maximum value is output.
In the case of the Segment
Linearizer or Temperature
and Pressure Correction
blocks, the previous data
is retained.
Execution of the Arithmetic
Operation block will be
stopped.
Output becomes the
maximum value or
minimum value of the
output range. (For
example, when the output
range is 320.00, the output
becomes +320.00 or
320.00.)
Execution of the Arithmetic
Operation block will be
stopped.
Execution of the Arithmetic
Operation block will be
stopped.
Execution of the relevant
block will be stopped.
The output value that was
active before the error
occurred is held.
The data of the function
block in question is not
updated.
Section 3-14
Remedy
In the case of DI/AI
Terminal from CPU Unit,
DI/AI Terminal from
Expanded CPU Unit or
Field Terminal blocks,
check the scaling value,
and in the case of the
Segment Linearizer block,
check the setting value of
the input coordinate side.
In the case of temperature
and pressure correction,
check the gain bias value.
Check the contents of the
conditional statement and
calculation expressions for
division by 0.
If there is a problem,
review the settings of
related ITEMs.
Check the contents of the
conditional statement and
calculation expressions
and correct the mistake.
Check the range of the
arguments and correct the
conditional statement or
calculation expressions.
Check the following AT
parameters: ITEM 036 to
ITEM 040. Also, set ITEM
051 to 2 s or less.
Re-program the Step
Ladder Program block so
that S1 to S3 select
switches are set to 1 (ON)
independent of each other.
If a malfunction has
occurred on the CPU Unit,
follow the remedy for that
error. If the CPU Unit is
normal, turn ON the power
supply again.
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