438
Operating Errors Section 8-5
CQM1 Non-fatal Errors
Note ** is 01 to 99, 9D, 9C, or 9B.
Communication Errors
If an error occurs in communications through the peripheral port or RS-232C
port the corresponding indicator (COM1 or COM2) will stop flashing. Check
the connecting cables as well as the programs in the PC and host computer.
Reset the communications ports with the Port Reset Bits, SR 25208 and
SR 25209.
Output Inhibit
When the OUT INH indicator is lit, the Output Inhibit Bit (SR 25215) is ON and
all outputs from the CPU Unit will be turned off. If it is not necessary to have
all outputs off, turn OFF SR 25215.
Message FAL No. Meaning and appropriate response
SYS FAIL FAL** (see
note)
01 to 99 An FAL(06) instruction has been executed in the program. Check the FAL number to
determine conditions that would cause execution, correct the cause, and clear the error.
9D An error has occurred during data transmission between the CPU Unit and Memory
Cassette. Check the status of flags AR 1412 to AR 1415, and correct as directed.
AR 1412 ON: Switch to PROGRAM Mode, clear the error, and transfer again.
AR 1413 ON: The transfer destination is write-protected.
If the PC is the destination, turn off the power to the PC, be sure that pin 1 of
the CPU Unit’s DIP switch is OFF, clear the error, and transfer again.
If an EEPROM Memory Cassette is the destination, check whether the power
supply is on, clear the error, and transfer again.
If an EPROM Memory Cassette is the destination, change to a writeable Mem-
ory Cassette.
AR 1414 ON: The destination has insufficient capacity. Check the source’s program size
in AR 15 and consider using a different CPU Unit or Memory Cassette.
AR 1415 ON: There is no program in the Memory Cassette or the program contains
errors. Check the Memory Cassette.
9C An error has occurred in the pulse I/O function or in the absolute-type encoder interface
function. Check the contents of AR 0408 to AR 0415 (two digits BCD), and correct as
directed. (This error code applies only to CQM1-CPU43-EV1 and CQM1-CPU44-EV1
CPU Units.)
01, 02: An error has occurred in the hardware. Turn the power off, and then power up
again. If the error persists, replace the CPU Unit.
03: The PC Setup (DM 6611, DM 6612, DM 6643, DM 6644) settings are incorrect. Cor-
rect the settings.
04: CQM1 operation was interrupted during pulse output. Check to see whether the Unit
receiving the pulse output was affected.
SYS FAIL FAL** (see
note)
9B An error has been detected in the PC Setup. Check flags AR 2400 to AR 2402, and cor-
rect as directed.
AR 2400 ON: An incorrect setting was detected in the PC Setup (DM 6600 to DM 6614)
when power was turned on. Correct the settings in PROGRAM Mode and turn on the
power again.
AR 2401 ON: An incorrect setting was detected in the PC Setup (DM 6615 to DM 6644)
when switching to RUN Mode. Correct the settings in PROGRAM Mode and switch to
RUN Mode again.
AR 2402 ON: An incorrect setting was detected in the PC Setup (DM 6645 to DM 6655)
during operation. Correct the settings and clear the error.
SCAN TIME OVER F8 Watchdog timer has exceeded 100 ms. (SR 25309 will be ON.)
This indicates that the program cycle time is longer than recommended. Reduce cycle
time if possible.
BATT LOW F7 Backup battery is missing or its voltage has dropped. (SR 25308 will be ON.)
Check the battery and replace if necessary. Check the PC Setup (DM 6655) to see
whether a low battery will be detected.
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