Mitsubishi Q00JCPU User Manual page 433

6
FUNCTIONS
Diagnosics
Intelligent function
1
module error *
Control bus error
Hardware
failure
Momentary stop
occurred
Multiple CPU high
speed bus dedicated
instruction error
Redundant base unit
power supply voltage
drop
Redundant power
supply module fault
*3
Battery low
ROM write count error
Table6.35 Self-diagnostics list (Continued)
Error message Diagnostics timing
• When the CPU
module is powered
on/reset
• When FROM/TO
instruction is
executed
SP.UNIT DOWN • When intelligent
function module
dedicated instruction
is executed
• When END
instruction is
executed
• When the CPU
module is powered
on
• When END
instruction is
executed
CONTROL-BUS • When FROM/TO
ERR. instruction is
executed
• When intelligent
function module
dedicated instruction
is executed
• Always
AC/DC DOWN • Always
• When the CPU
MULTI-C.BUS
module is powered
ERR.
on/reset
SINGLE PS.
• Always
DOWN
SINGLE PS.
• Always
ERROR
BATTERY ERROR
• Always
FLASH ROM
• At ROM write
ERROR
CPU LED status
module
RUN ERR.
status
Stop/
OFF/ON Flash/ON
Continue
Stop OFF Flash
OFF
Continue ON
Stop OFF Flash
Continue ON ON
Continue ON ON
BAT.ALM
Continue ON
LED ON
Continue ON ON
: Self-diagnostics is performed,
6.17 Self-diagnostics Function
CPU module
1) 2) 3) 4) 5)
*4 *4 *9
*4 *4 *9
: Self-diagnostics is not performed
(Continued on next page)
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