Omron SYSMAC CS Series Operation Manual page 266

Errors and Alarm Troubleshooting
Code Description
71 Inappropriate
parameter
234
Explanation
a) When restricted conditions
are applied across two
ITEMs:
(example: when the unit
pulse output is equal to or
greater than the operation
cycle when there is unit pulse
output in run time accumula-
tion)
b) An attempt has been
made to write out-of-range
data at the ITEM Setting
block.
The Segment Program 2
block operation cycle set for
the Slave does not match the
Segment Program 2 block
operation cycle set for the
Master in Segment Program
2 (Block Model 157).
With the Segment Program 3
block (Block Model 158), the
bank number set for a step is
greater than the maximum
number of banks used.
With the Segment Program 3
block (Block Model 158), an
attempt was made to set a
value out of range when writ-
ing to an ITEM set using a
set value 1 to 5.
One of the following errors
was detected in the Split
Converter (Block Model 169):
The Heating MV high limit is
not greater than the Heating
MV low limit.
The Cooling MV high limit is
not greater than the Cooling
MV low limit.
One of the following errors
was detected in the Split
Converter (Block Model 169):
The minimum input value for
heating was above 100% or
the maximum input value for
cooling was below −100%.
Operation at error
a) The function block in ques-
tion is not executed.
b) Data cannot be written.
The slave's initial Segment
Program 2 block is not
changed and operation does
not start.
Program outputs do not oper-
ate at the default settings.
The run/stop command
(ITEM 013) turns OFF. The
program output (ITEM 008) is
set according to the output
mode when S1 is OFF (ITEM
023).
The block in question is not
executed.
The block in question is not
executed.
Section 7-1
Remedy
Check the settings of the
ITEMs.
Change the Segment Pro-
gram 2 block operation cycle
set for the Slave so that it
matches the Segment Pro-
gram 2 block operation cycle
set for the Master.
Change the bank number so
that it is within the maximum
number of banks used.
Check the value written to the
ITEM set using set value 1 to
5.
Correct the limit value set-
tings so that:
Heating MV high limit > Heat-
ing MV low limit
and
Cooling MV high limit > Cool-
ing MV low limit.
Check and correct the set-
tings for the input range type,
dead band, and center value
offset.