Mitsubishi MELSEC-A Series Operating Manual page 167

7.
6
LISTS
.
1
1 . ,
OF ERROR MESSAGES
U6LSEcI.A
7.3
Errors When Using the A8PUE in
a
Link System
The "PLC COMM. ERR." message is sometimes displayed when the A8PUE
is used in a
f i n k
system).
When this happens, check the error contents and
take
corrective
aciion.
'
Error Numbers Error Contentr
Processing
: A new processing request
cancellation
was output from the ABPUE
4
though CPU was already
processing.
5
Sum check error : A link communications sum
check error occurred.
16
PC NO. error : The corresponding PC num-
ber station does not exist.
19
When the ACPU is reset during monitoring,
this error sometimes occurs.
Remote error : Though remote
STOPIPAUSE was exe-
cuted from the computer
link unit, etc., remote
RUNETOP was executed
from the ABPUE.
24
Link error : During monitoring of a mas-
ter station from a slave sta-
tion, the master station was
reset.
EEPROM fault : Writing could not be exe-
32
34
cuted because of a faulty
EEPROM.
Corrective Action($)
Do
key operations from the A8PUE side again.
This error could be caused by noise influence.
Recheck the system.
Check the PC number setting, and set the correct
number.
Perform monitoring operations again.
Execute remote RUNISTOPIPAUSE from either unit.
~~~~ ~
Perform monitoring operations again.
Replace the EEPROM.
When error code
25
is displayed, the cause could be one of the following:
Check the contents and take corrective action.
(1) When connected to a master station
Dovica
Numbers Names
I
Link card error (For
M9210
a master station)
r
M9224
Link state
4
I
M9227
Loop test state
L
I
OFF : Normal
ON
:
Abnormal
OFF : Online
ON : Offline, station-to-
station test, or
self-loopback test
OFF : Not executed
ON : A positive loop
test or a reverse
loop test a being
executed.
Contentr
The link card's HMI is abnormal during control. A
link card in the CPU link unit is judged by the CPU.
Replace the link unif.
Controlled by the master station state such as offl-
ine, station-to-station test, or the self-loopback test
mode. Check the mode switch.
Controlled by whether a master station is executing
a positive loop test or a reverse loop test.
1
7 - 5