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Error and message Possible correctionProbable causeFAL no.
Too many Units
I/O UNIT OVER
E1 Two or more Special I/O
Units are set to the
same unit number
Two or more Group-2
High-density I/O Units
are set to the same I/O
number or I/O word.
The I/O number of a
64-pt Group-2
High-density I/O Unit is
set to 9.
Two SYSMAC NET Link
or SYSMAC LINK Units
share the same
operating level.
Two or more Interrupt
Input Units are mounted.
Perform the I/O Table Read
operation to check unit
numbers, and eliminate
duplications. (High-density I/O
Units other than Group-2 are
Special I/O Units, too.)
Set unit numbers of 64-pt
Group-2 High-density I/O Units
to numbers other than 9.
Check the SYSMAC NET Link
and SYSMAC LINK Unit
operating levels and eliminate
duplications.
Mount only one Interrupt Input
Unit.
Input-output I/O table error
I/O SET ERROR
E0 Input and output word
designations registered
in I/O table do no agree
with input/output words
required by Units
actually mounted.
Check the I/O table with I/O
Table Verification operation and
check all Units to see that they
are in correct configuration.
When the system has been
confirmed, register the I/O table
again.
FALS error
SYS FAIL FAL**
01 to 99
or 9F
FALS has been
executed by the
program. Check the FAL
number to determine
conditions that would
cause execution (Set by
user or by system).
Correct according to cause
indicated by FAL number. If FAL
number is 9F, check watchdog
timer and cycle time, which may
be to long. 9F will be output
when FALS(07) is executed and
the cycle time is between 120
and 130 ms.
Communications Errors If errors occur in communications, the indicator for the peripheral port (COMM/
COMM1 when using RS-232C Programming Console cable) or the RS-232C
port (COMM2) will not light. Check the connection, programming on both ends
(C200HS and peripheral), and then reset the port using the reset bits (peripheral
port: SR 25208; RS-232C port: SR 25209).
Other Error Messages A number of other error messages are detailed within this manual. Errors in pro-
gram input and debugging can be examined in
Section 4 Writing and Inputting
the Program.
Error Messages Section 10-4