Omron CJ1W-DRM21, Operation Manual

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4-33
4 Remote I/O Master Communications
CJ-series DeviceNet Units Operation Manual for NJ-series CPU Unit(W497)
4-7 Err
o
rs
that Ma
y Occur in
Rem
o
te
I/O C
o
m
m
u
n
ication
s
4
4-7 Errors that May Occur in Remote I/O
Communications
The following errors may occur during remote I/O communications.
Condition Error Details Results Indicators 7-seg-
ment
indica-
tor
Error
occurs in
fixed allo-
cations
with the
scan list
disabled *_Mstr1StruE
rr
(Structure
Error) is
TRUE
Duplicate
I/O area The same I/O word is allocated to
two or more slaves. (This occurs
whenever a slave that is allocated
multiple words has one of the
words allocated to the node
address of another Slave.) Reconnect with
the error slave
and continue
remote I/O com-
munications. MS: Not
related
NS:
Flashes
red
d0
I/O area
range
exceeded A slave is allocated an area out-
side the fixed allocations area.
(This occurs whenever slaves are
allocated multiple words and a
slave is allocated a word beyond
node address 63 in the fixed allo-
cations area.) d1
Unsup-
ported
Slave The I/O size of a slave exceeds
200 bytes (100 words). (This
occurs if either the IN or the OUT
size exceeds 200 bytes.) d2
Error
occurs in
either fixed
or user-set
alloca-
tions with
the scan
list
enabled *_Mstr1VefyE
rr
(Verifica-
tion Error) is
TRUE
No slaves
present A Slave registered in the scan list
is not present. d5
I/O size
mis-
matched The I/O size registered in the scan
list does not match the I/O size of
the slave.
Note I/O size is compared in 8-
point (1-byte) units. If I/O
size is registered at 8 points
for example, then an error
I/O size mismatch will not
occur with a Slave with just
one input point connected.
d6
Incorrect
vendor The vendor registered in the scan
list does not match the slave ven-
dor. d6
Incorrect
device type The device type registered in the
scan list does not match the slave
device type. d6
Incorrect
product
code The product code registered in
the scan list does not match the
slave product code. d6
Incorrect
connection
bus The connection bus registered in
the scan list is set incorrectly. d6
Unsup-
ported con-
nection The slave does not support the
connection registered in the scan
list. d6