Operating Instructions

Option Cards
RT-DNET-COMM
441 | 443
NS LED
LED status
Indication
Corrective Action
Off
No power supply or the RT-DNET-COMM
does not pass the MAC ID test.
1. Check the power to the RT-DNET-COMM and see if the
connection is normal.
2. Ensure there is at least one node on the bus.
3. Check if the baud rate of the RT-DNET-COMM is the same
as that of the other nodes.
Green light flashes
The RT-DNET-COMM is on-line but does not
connect to the master.
1. Configure the RT-DNET-COMM to the scan list of the
master.
2. Re-download the configured data to the master.
Green light on
The RT-DNET-COMM is on-line and normally
connects to the master.
No action is required.
LED status
Indication
Corrective Action
Red light flashes
The RT-DNET-COMM is on-line, but I/O
connection is timed-out.
1. Check if the network connection is normal.
2. Check if the master operates normally.
Red light on
Broken communication
MAC ID test failure
No network power supply.
RT-DNET-COMM is off-line.
1. Ensure all MAC IDs on the network are unique.
2. Check if the network installation is normal.
3. Check if the baud rate of the RT-DNET-COMM is the same
as that of the other nodes.
4. Check if the node address of the RT-DNET-COMM is
illegal.
5. Check if the network power supply is normal.
MS LED
LED status
Indication
Corrective Action
Off
No power supply or device is off-line
Check the power supply of the RT-DNET-COMM and see if the
connection is normal.
Green light flashes
Waiting for I/O data
Switch the master PLC to RUN status.
Green light on
I/O data is normal
No action is required.
Red light flashes
Mapping error
1. Reset the RT-DNET-COMM.
2. Re-power the AC motor drive.
Red light on
Hardware error
1. See the fault codes displayed on the keypad and find the
causes.
2. Return the unit to the factory for repair if necessary.
Orange light flashes
The RT-DNET-COMM is connecting with the
AC motor drive.
If the flashing lasts for a long time, turn off the power to check if
the RT-DNET-COMM and the AC motor drive are installed
correctly and are normally connected to each other.