Troubleshooting - Omron C200H-ASC11 Manual

Troubleshooting

Situation
To branch to an interrupt subroutine when
an error has been generated.
To obtain the error code that has been
generated.
To obtain the line number where the error
occurred.
To simulate error generation.
9-2

Troubleshooting

Error List
Error
None of the indicators are lit.
ERR1/2/T indicator is lit.
(Port #1/port #2/terminal port
communications error.)
ERR (error) indicator is lit. (System/
BASIC error)
248
When an error is generated, the following commands are used to include an
error processing program within a BASIC program.
Command
ON ERROR GOTO command
ERR function
ERL function
ERROR command
Probable cause
Power to the PC itself is turned OFF.
The ASCII Unit is not mounted
securely.
One of the Special I/O Units is faulty.
(Waiting for the Special I/O Unit to start
up)
CPU Unit does not start operation.
The Special I/O Unit number occurs
twice.
(I/O Unit over)
In such cases, the CPU Unit will not
start operation.
The refresh between the CPU Unit and
the ASCII Unit has not occurred
properly. (Special Unit error)
In such cases, only the ASCII Unit
stops operating.
An error has occurred in the Special I/
O Unit or the CPU Unit as a result of
damage to the BASIC program
memory.
The connecting cable is not connected
to the device properly.
The connecting cable is burnt out or
the connection at the connector is
faulty.
The baud rate or communications
parameters of the connected device
and the ASCII Unit do not match.
Incorrect data has been set for the DM
Area in the PC.
Alternatively, a BASIC program
execution problem has been
generated.
Remarks
Include an error processing program in the
interrupt subroutine.
Use this function in the interrupt subroutine
at the ON ERROR GOTO destination.
Use this function in the interrupt subroutine
at the ON ERROR GOTO destination.
The action that is considered to have
generated the error for a specified error
code is performed.
Possible correction
Turn ON the PC power.
Mount the ASCII Unit securely.
Exchange the faulty Special I/O Unit.
The faulty Unit has "$" only displayed in
the Read I/O Table operation.
Before replacing the Unit, perform
Corrective Measure 1, given below.
Adjust the settings to ensure that the
unit numbers do not occur more than
once.
The unit number can be viewed using
Read I/O Table.
After eliminating the cause of the fault,
Turn ON the corresponding Restart Bit
(OFF→ON→OFF).
If not restored after restarting, press
the Ctrl+X Keys.
Perform Corrective Measure 1, given
below.
Corrective Measure 1: Set the user
memory default switch on the back
panel of the ASCII Unit to the right
(ON) and turn the power OFF then ON
again. Set the default switch back to
the left and turn the power OFF then
ON again. If the ASCII Unit still does
not reset after this process, replace the
Unit.
Connect the connecting cable correctly
and secure with screws.
Repair or exchange the connecting
cable.
Match the baud rate and
communications parameters of the
connected device and the ASCII Unit.
Check the error code and error
message and take the appropriate
action for that error.
Section 9-2