Panasonic FP-E Programming Manual page 1321

Table of Self-Diagnostic Error
Error
Name
code
E20 CPU error
RAM
E21
error1
RAM
E22
error2
RAM
E23
error3
RAM
E24
error4
RAM
E25
error5
Master
memory
E25 model
unmatch
error
User's
E26
ROM error
Unit
E27 installation
error
System
E28 register
error
*1) This error occurs on FP-X Ver2.0 or later.
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Opera-
tion Description and steps to take
status
Probably a hardware abnormality
Stops
⇒Please contact your dealer.
Probably an abnormality in the internal RAM.
Stops
⇒Please contact your dealer.
The models of master memories are different.
Stops
Use the master memories created with the
same model.
FP-e,FP0,FP0R,FPΣ,and FP1
C14,C16:Probably a hardware abnormality.
⇒ Please contact your dealer.
FP-X:
When the master memory cassette is
mounted, the master memor cassette may be
damaged. Remove the master memory, and
check whether the ERROR turns off.
When the ERROR turned off, rewrite the
master memory as its contents are damaged,
and use it again.
When the ERROR does not turn off, please
contact your dealer.
Stops
FP1 C24,C40,C56,C72,and FP-M:
Probably an abnormality in the memory unit
⇒Program the memory unit again and try to
operate. If the same error is detected, try to
operate with another memory unit.
FP2,FP2SH,FP10SH,and FP3:
There may be a problem with the installed
ROM.
-ROM is not installed.
-ROM contens are damaged.
-Program size stored on the ROM is larger
than the capacity of the ROM
⇒Check the contents of the ROM
Units installed exceed the limitations.(i.e.,4 or
more link units)
Stops
⇒ Turn off the power and re-configure units
referring to the hardware manual.
Probably an abnormality in the system
register.
Stops
⇒ Check the system register setting or
initialize the system registers.
A
A
A
*1
)
A A A A A A
A A A A
A
A:Available
5-233
A A
A A
A A
A A