2.3 LED Status Indicators
This option has five LED status indicators shown below. They indicate the operation status of the option as listed
in Table 2.1.
L.RUN
RUN
L.ERR
SD
RD
Figure 2.3 LED Status Indicators
Table 2.1 LED Indications and Operation Status
LED States
L.RUN
RUN
L.ERR
SD
RD
Operation Status
z
z
{
z
z
Normally communicating.
z
z
z
Normally communicating. But sometimes a CRC error
occurs due to electrical noise.
z
z
{
z
Received data contains a CRC error, so this option
cannot respond.
z
z
{
{
z
Data destined for this station does not come.
{
z
z
Responding to polling. But refresh data received
contains a CRC error.
The inverter trips with alarm
GT
displayed.
*1
{
z
{
z
Data destined for this station contains a CRC error.
The inverter trips with alarm
GT
displayed.
*1
{
z
{
z
Station address incorrectly specified.
Data destined for this station cannot be received due
to electrical noise.
{
z
z
{
z
/
{
Transmission speed (Baud rate) and/or station
address out of the allowable range.
z
z
(at 0.8-second
intervals)
z
Transmission speed (Baud rate) or station address
changed during CC-Link communication.
{
z
{
{
{
This option cannot receive data due to broken wires,
etc.
The inverter trips with alarm
GT
displayed.
*1
{
(at 0.4-second
intervals)
{
{
{
The master station is compliant with CC-Link version
1.xx and this slave station, with CC-Link version 2.xx.
Or the inverter's function code o30 is set to "5 to 255."
The inverter trips with alarm
GT
displayed.
{
(at 0.2-second
intervals)
{
{
{
During normal communication, the option connection
cable has been broken or the power to the inverter has
been cut OFF.
If the cable has been broken, the inverter trips with
alarm
GT
displayed.
{
(at 50 ms
intervals)
z
{
{
When this option is turned ON, the inverter has been
OFF or the option connection cable has been
disconnected.
{
{
{
{
{
This option is OFF or broken.
If the inverter power is ON, it trips with alarm
GT
displayed.
z
: ON,
{
: OFF,
: Blinking (It may seem to be ON depending on the current transmission speed.)
*1 Alarm
GT
occurs when a communications error is detected after a normal communications link has been
established once.
It is possible to change the
GT
occurrence conditions with inverter's function codes. For details, refer to
Chapter 8 "INVERTER REACTION TO CC-Link COMMUNICATIONS ERRORS."
7
