Table of self-diagnostic errors

Probably a hardware abnormality.

Please contact your dealer.

Probably an abnormality in the internal RAM.

Please contact your dealer.

FP2, FP2SH, FP3, FP10SH:

ROM is not installed. There may be a problem with the installed ROM.

• ROM contents are damaged

• Program size stored on the ROM is larger than the capacity of the ROM

Check the contents of the ROM

FP-X:

If the master memory cassette is mounted, the master memor cassette may be damaged. Remove the master memory, and check whether the ERROR turns off.

If the ERROR turned off, rewrite the master memory as its contents are damaged, and use it again.

If the ERROR does not turn off, please contact your dealer.

FP0, FP-e, FPå, FP1 C14, C16:

Probably an abnormality in the built-in ROM.

Please contact your dealer.

All FP-Ms and FP1 C24, C40, C56, and C72:

Probably an abnormality in the memory unit or master memory unit.

Program the memory unit or master memory unit again and try to operate. If the same error is detected, try to operate with another memory unit or master memory unit.

Intelligent units installed exceed the limitations (i.e. 4 or more link units).

Turn off the power and re-configure intelligent units referring to the hardware manual.

Probably an abnormality in the system register.

Check the system register setting or initialize the system registers.

A parameter error was detected in the MEWNET-W2 configuration area. Set a correct parameter.

Probably a hardware abnormality.

Please contact your dealer.

An interrupt occurred without an interrupt request.A hardware problem or error due to noise is possible.

Turn off the power and check the noise conditions.

An interrupt occurred without an interrupt request.A hardware problem or error due to noise is possible.

Turn off the power and check the noise conditions.

There is no interrupt program for an interrupt which occurred.

Check the number of the interrupt program and change it to agree with the interrupt request.

This error occurs when a FP3/FP10SH is used as CPU2 for a multi-CPU system.

Please contact your dealer.

An abnormal unit is installed.

Check the contents of special data register DT9036/DT90036 and locate the abnormal unit. Then turn off the power and replace the unit with a new one.

A unit, which cannot be installed on the slave station of the MEWNET-F link system, is installed on the slave station.

Remove the illegal unit from the slave station.

The number of slots or I/O points used for MEWNET-F exceeds the limitation.

Re-configure the system so that the number of slots and I/O points is within the specified range.

I/O overlap or I/O setting that is over the range is detected in the allocated I/O and MEWNET-F I/O map.

Re-configure the I/O map correctly.

I/O mapping for remote I/O terminal boards, remote I/O terminal units and I/O link unit is not correct.

Re-configure the I/O map for slave stations according to the I/O points of the slave stations.

With FP3/FP10SH, communication error in the MEWNET-TR system has occurred.

For all other PLCs an abnormality in an I/O unit has been detected.

Check the contents of special data registers DT9002 and DT9003/DT90002 and DT90003 and the erroneous MEWNET-TR master unit or abnormal I/O unit (also expansion unit or application cassette). Then check the unit.

Selection of operation status using system register 21:

• to continue operation, set K1 (CONT)

• to stop operation, set K0 (STOP)

An abnormality in an intelligent unit.

Check the contents of special data registers DT9006 and DT9007/DT90006 and DT90007 and locate the abnormal intelligent unit. Then check the unit referring to its manual.

Selection of operation status using system register 22:

• to continue operation, set K1 (CONT)

• to stop operation, set K0 (STOP)

I/O unit wiring condition has changed compared to that at time of power-up.

Check the contents of special data registers DT9010 and DT9011/DT90010 and DT90011 and locate the erroneous unit.

Then check the unit and correct the wiring.

Selection of operation status using system register 23:

• to continue operation, set K1 (CONT)

• to stop operation, set K0 (STOP)

Scan time required for program execution exceeds the setting of the system watchdog timer.

Check the program and modify it so that FP2SH/FP10SH can execute a scan within the specified time.

Selection of operation status using system register 24:

• to continue operation, set K1 (CONT)

• to stop operation, set K0 (STOP)

The time required for slave station connection exceeds the setting of the system register 35.

Selection of operation status using system register 25:

• to continue operation, set K1 (CONT)

• to stop operation, set K0 (STOP)

Operation became impossible when a high-level instruction was executed.

Check the contents of special data registers DT9017 and DT9018/DT90017 and DT90018 to find the program address where the operation error occurred. Then correct the program.

Refer to the explanation of operation error and the instruction.

Selection of operation status using system register 26:

• to continue operation, set K1 (CONT)

• to stop operation, set K0 (STOP)

MEWNET-F communication error:

A communication abnormally was caused by a transmission cable or during the power-down of a slave station.

Check the contents of special data registers DT9131 to DT9137/DT90131 to DT90137 and locate the abnormal slave station and recover the slave condition.

Selection of operation status using system register 27:

• to continue operation, set K1 (CONT)

• to stop operation, set K0 (STOP)

S-Link communication error (with FP0-SL1 unit only):

When one of the S-LINK errors (ERR1, 3 or 4) has been deteced,error code E46 (remote I/O (S-LINK) communication error) is stored.

Selection of operation status using system register 27:

• to continue operation, set K1 (CONT)

• to stop operation, set K0 (STOP)

MEWNET-F communication error

A communication abnormally was caused by a transmission cable or during the power-down of a slave station.

Check the contents of special data registers DT9131 to DT9137/DT90131 to DT90137 and locate the abnormal slave station and recover the communication condition.

Selection of operation status using system register27:

• to continue operation,set K1

• to stop operation, set K0

The voltage of the backup battery lowered or the backup battery of CPU is not installed.

Check the installation of the backup battery and then replace battery if necessary.

By setting the system register 4 in K0 (NO), you can disregard this error. However, the BATT. LED turns on.

Terminal station settings were not properly performed.Check stations at both ends of the communication path, and set them in the terminal station using the dip switches.

Set the INITIALIZE/TEST selector to the INITIALIZE position while keeping the mode selector in the RUN position. If the same error occurs after this, please contact your dealer.

Abnormality was detected when the multi-CPU system was used. Please contact your dealer.

The voltage of the backup battery for the IC memory card is getting low. The BATT. LED does not turn on.

Charge or replace the backup battery of IC memory card. (The contents of the IC memory card cannot be guaranteed.)

The voltage of the backup battery for IC memory card is getting low. The BATT. LED does not turn on.

Charge or replace the backup battery of IC memory card. (The contents of the IC memory card cannot be guaranteed.)

The IC memory card installed is not compatible with FP2SH/FP10SH. Replace the IC memory card compatible with FP2SH/FP10SH.

MEWNET-W2

The MEWNET-W2 link unit is not installed in the slot specified using the configuration data.

Either install a unit in the specified slot or change the parameter.

The self-diagnostic error specified by the F148 (ERR)/P148 (PERR) instruction is occurred.

Take steps to clear the error condition according to the specification you chose.