Omron ZEN - 6-2 Error Messages

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Error Messages Section 6-2
Display function (D):
• For AC power supply types, analog-converted values (I4/I5 or Ia/
Ib) are specified as the displayed items.
• For LED-type CPU Units, the date (DAT), day/month (DAT1), and
time (CLK) are specified as the displayed items.
Error at Power ON or During Operation
Error During Program Transfer from Memory Cassette
Note Use the ZEN Support Software to read error messages for LED-
type CPU Units.
Error message Probable cause Possible solution
I/O BUS ERR Expansion I/O Unit
connection error.
Turn OFF the power supply and check that
the Expansion I/O Unit is connected
properly.
MEMORY ERR Program error. Execute the All Clear operation and then re-
write the program.
I2C ERR Communications error
between Memory and
RTC.
Press any operation button and clear the
error. Replace the CPU Unit if the error
occurs frequently.
Error message Probable cause Possible solution
M/C ERR Memory cassette
program error.
Save the error-free program to the Memory
Cassette again.
Z211-E1-03.book Page 117 Friday, November 21, 2008 10:38 AM