11.
TROUBLESHOOTING
MELSEC-A
Character error received.
A character other than 'A to
Z',
'0
to
S',
' '
and control codes in Section 8.4.5 (1) ha;
been
tions with the PC
CPU.
Buffer memory is unable to make communica-
The PC CPU is not the type mentioned in
Section 2.2.
Defined PC CPU number do- not exist.
The PC CPU number designated with
the
protocol was not the self (FFH) or a station
number set with the MELSECNET link
parameters.
Incorrect communications between an
AJ71C24 and a PC CPU.
After the AJ71 C24 has correctly receivod a
request from the computer, normal data
the AJ71 C24 and PC CPU due to noi8e or
communications is not performed between
some other reason.
Special function module designation error.
A special function module, having buffer
communications, is not placed in the
momory and capable
of
performing data
designated special function module
number's position. Or the module number
is wrong.
~
Error in the designation of a sequence pro-
gram step number.
(1)
A
step number was designated which lies
the PC CPU parameters.
outside the program range designated by
exist (or cannot be designated) was desig-
nated.
(2) A subsequence program that does not
Remote RUN/STOP impossible.
ecuted from another module (such
as
Remote STOP/PAUSE has already been ex-
another AJ71 C24).
Access was made to a station with which
communications has been discontinued.
Memory access to the special function module
cannot be made (for command TR,
TW).
(1) Special function module control bus error.
(2) Special function module breakdown.
con.ctiwActkn
Check and correct data.
Use a PC CPU which can per-
form data communications.
Change the PC CPU number
to
the self (FFH) or a station
number set with the MELSEC-
NET
link parameters, and res-
tart data communications.
Restart data communications.
tf
the error recurs, (a) check
for noise and/or other causes,
or (b) replace the AJ71 C24.
Restart data communications.
Check control protocol data
or change the special func-
tion module location.
(1) Designate a
step
number
which
lies
within the
desi
n&drange,orchurgetk
panmaen
and
restart
trans-
mbsion.
(2) Check the model name
and
the
set
parameter values
d
the
corresponding PC CW.
STOPlPAUSE from another
Check
for
and reset remote
module.
Check the state of data link.
PC CPU,
bas.
unit,
special
function module or AJ71C24
hardware fault. Consult the
nearest Mitsubishi repre-
sentative.
(1) Error codes OOH to 08H are transmitted to a computer after diagnosis by an AJ71C24, when
(2) Error codes 10H to 21H are transmitted from an AJ71C24 to
a
computer after diagnosis by
access is made by the computer to the AJ71
C24.
a
PC CPU when access is made by an AJ71 C24 to the PC CPU.
c
d
n
d
h
d
Li
n
8,
U
Y
L.
LI
11
-2
3
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
To Next Page
Loading...
