3 Data Exchange with the CPU Unit
3-34
CJ-series DeviceNet Units Operation Manual for NJ-series CPU Unit(W497)
*_Mstr1IOErr BOOL R Remote I/O
Communi-
cations
Error
<Operation specifications>
TRUE:
Indicates that a remote I/O communica-
tions timeout occurred during remote I/O
communications with slaves.
Note Remote I/O communications stop if
DIP switch pin 3 (remote I/O com-
munications stop/continue with a
communications error) on the front
panel is ON (stop). This error occurs
with the scan list enabled or dis-
abled.
FALSE:
Indicates that a remote I/O communica-
tions error did not occur. Or, changes to
FALSE when a remote I/O communica-
tions error is cleared.
Default: FALSE
*_Mstr1SListErr BOOL R Invalid Scan
List Data
Error
<Operation specifications>
TRUE:
Indicates that there is incorrect data in the
scan list (mismatched checksum).
Remote I/O communications in the Unit
will stop. (Slave operations and message
communications will continue.)
FALSE:
Indicates that the scan list data is correct.
Changes to FALSE when an incorrect
scan list data error occurs and then the
correct scan list is registered.
Default: FALSE
Name of device variable for
CJ-series Unit
Type R/W Area Function
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