232
Problems and Countermeasures Section 8-3
The NS indicator continues to flash green • Make sure that the Master is operating properly.
When using an OMRON Master, refer to the Master Unit’s Operation
Manual. When using another company’s Master Unit, refer to that Mas-
ter’s user’s manual.
• Check whether the Slave is registered in the Master’s scan list.
If an OMRON Master Unit is being used, a new Slave cannot be added
to the network if the Master is operating with the scan list enabled. First
perform the clear scan list operation, check that the Slave has joined the
network, and then perform the create scan list operation.
If another company’s Master Unit is being used, refer to that Master’s
operation manual for details on adding a new Slave to its scan list.
The NS Indicator alternates between
being green and flashing green, or alter-
nates between flashing red and flashing
green.
• When using an OMRON Master, check the following items and perform
the necessary error processing steps.
-> Register the scan list again.
(After performing the clear scan list operation, check that the Slave
has joined the network and perform the create scan list operation.)
-> Make sure that the Slave’s allocated I/O area does not overlap with
that of another Slave. If there is an overlap, change the Slave’s node
address to eliminate it.
-> Make sure the the allocated I/O area does not exceed the allowed
range. If the I/O area exceeds this range, change the Slave’s node
address to correct the problem.
• When using another company’s Master Unit, check that the I/O size reg-
istered in the Master’s scan list matches the actual I/O size of the Slave.
The I/O size is recorded in the following attributes of the connection
object:
Interface 2 (Polled I/O Connection)
Produced Connection size (Input size)
Consumed Connection size (Output size)
and:
Interface 3 (Bit strobed I/O Connection)
Produced Connection size (Input size)
Refer to the Master’s manual for details on registering the values.
Error Probable cause
To Next Page
Loading...
