Error Led And Measure; Err Confirmation By Led Indication - Hitachi EH-150 Applications Manual

9.3

Error LED and measure

Following table shows the indication and the measure in case an error occurs in communication between
EH-ETH2 and other station.
9.3.1

ERR confirmation by LED indication

The LED indications on the module give you information about your network and the module.
No. Error content
1 A fault of hardware
2 Check sum error of
Communication
Parameters.
3 Setting of Communication
Parameters is wrong.
4 Wrong cable
5 Connection opening error
(active open station)
6 Error at data sending
7 Error at data receiving
*1: A connection specified passive station does not detect the abnormality below a data link level layer.
Therefore, the other station should have detection of error when the connection specified passive station
is not open.
Table 9.3 LED indication and Error content
LED
Name Status
WDE
WDE
IER
IER
Tx1 / Rx1
LINK LED
(of Ethernet
connector)
ERR
(*1)
STS Blinking
9-2
Chapter 9 Maintenance, check, error
Cause of error and measurement
ON Supply the power or reset by Reset switch to restart.
ON Correct the setting of Communication Parameters.
ON Correct the setting of Communication Parameters.
OFF (1) Wrong kind of cable
Check if the using cable is straight or cross type.
(2) Wrong connection of cable
Check if the cable is plugged in a connector firmly.
Check if it is not breaking wire.
ON (1) The requested station is not in network.
- Check if the station is in the same network.
- Check the cables for both own and the other station.
(2) Wrong setting at the own station
- Check if the IP address and logical port number at
the own station.
(3) Wrong setting at the other station
- Check if the other station is in passive open.
Before the current transmission completed, EH-ETH2
is requested next transmission.
- Configure the cyclic transmission period to be
longer.
- Configure the data size for sending to be smaller.
Before the current communication completed,
EH-ETH2 receives next data.
- Configure the transmission period of the other station
to be longer.
- Configure the data size for receiving to be smaller.