Specifications

App - 51
(From the previous page)
LED name Status to check Cause/corrective action
5 [RD]
[RD] LED stays
off and data
cannot be
received.
1) [ERR.] or [COM.ERR.] LED turns on.
•
Remove the factors that turn on the [ERR.] or [COM.ERR.] LED.
2) Poor cable connection
•
Check the connection of the cable.(*2)
3) Local station IP address setting error
•
If the cable connection is all right, review each setting value of the local
station IP address, router setting, and sub-net mask settings using the GX
Developer.
4) Program reviewing is required
•
Review the sequence program for sending.
*1 Conduct a hardware test (H/W test) and check whether or not the Ethernet
module operates normally.
For details on the hardware test, refer to see Section 4.7.2.
*2 Conduct a PING test (confirmation of the completion for the initial processing)
and check whether or not there is any problem in the cable connection and the
Ethernet lines.
For details on the PING test, refer to Section 6.4.
POINT
The on/off status of the [INIT.], [OPEN], [ERR.] and [COM.ERR.] LEDs is stored in
the module status area (address: C8
H) of the buffer memory.