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3. CC-Link Communication Function
[SMF-2008-A]
– 3-16 –
3.7. LED Indication
The state of the module and that of the network can be displayed. See the description in the
following table for the LED indication.
Fig. 3.18. Name of LED
Table 3.12. LED specification list
Name of
LED
Color
Description of indication
SD
Green
Lit during data transmission.
RD
Lit during data reception.
L RUN
Lit when the slave station is receiving normal data from the master station.
Unlit upon time-over.
L ERR
Red
Unlit during normal communication. (L RUN is lit.)
Lit upon a transmission error (CRC error).
Lit upon an error in the station number setting or transmission speed setting.
ERR blinks when the station number setting or transmission speed setting is
changed in the middle.
Unlit upon time-over.
Table 3.13. LED state list
LRUN
LERR
SD
RD
Operation
◎
◎
CRC errors are sometimes caused in spite of normal updates.
0.4s
◎
◎
The baud rate or station number setting is changed from the power-on setting.
◎
Cannot respond due to a CRC error in the reception data.
◎
Normal communication
No data arrives at the own station.
◎
◎
Response to polling is made though the refreshment reception is in a CRC
error.
◎
CRC error in data destined to own station
◎
Link start is not made.
There is no data destined to the own station or reception is disabled.
Data reception is disabled. In shutdown or H/W resetting.
/
Incorrect baud rate or station number setting
: Lit,
: Unlit,
◎
: Blink
The blinking rate of SD is too quick that you may feel that the LED is continuously lit in the
communication state.
Up
L ERR
L RUN
RD
SD
Содержание ABSODEX AX9000XS-U2
Страница 7: ...1 Specifications SMF 2008 A 1 4 MEMO ...
Страница 13: ...2 Wiring SMF 2008 A 2 6 MEMO ...
Страница 31: ...3 CC Link Communication Function SMF 2008 A 3 18 MEMO ...
Страница 43: ...4 Network Operation Mode SMF 2008 A 4 12 MEMO ...