MITSUBISHI ELECTRIC 700 Series - Manual (Page 27)

22
Inverter Status Monitoring, Special Registers
for Control
<Alarm definition read program example>
The following program reads the latest alarm definition of the inverter to D0.
<Regarding the error No. and details of the self-diagnostic errors>
During execution of a sequence program, any of the following error No. is stored into
D9008 due to an operation error.
At occurrence of a self-diagnostic error, the P.RUN indication (LED) flickers.
Error No. Error Name Details
10 INSTRCT CODE ERR.
There is an instruction code that cannot be decoded.
Unusable device is specified.
11 PARAMETER ERR
Main program capacity setting is over 1k step.
Unusable function is set.
22 WDT ERR
Scan time is longer than the time that can be monitored
by the watchdog timer.
24 END NOT EXECUTE END instruction was not executed.
CAUTION
1. For the LD, AND, OR, logical comparison operation and OUT instructions,
device checks are always made. For the other instructions (SET, RST, MOV,
etc.), however, device checks are made when the execution condition holds.
2. Operation at error stop
The outputs (Y) are cleared.
The other devices hold the states prior to an error stop.
When you want to clear them, power off or reset (short RES-SD (0.1s), then
open) the inverter.
Alarm definition read request
Stores only the lower 8 bits
of error history 1, 2 (D9136)
into D0.
(The latest error information
is stored into D0.)