Hitachi HIDIC EH-150 Applications Manual page 106

(3) ERR LED light
ERR LED light
Normal operation mode
Establish a connection
Data sending failed
Data receiving failed
Turn off and on the power of whole network
and all connected devices. If you still have the
same problem, contact your local Hitachi
supplier.
*1: Depending on the timeout setting, it takes several minutes to detect an error.
*2: If connection status (open or close) to be checked, an additional ladder program is required
*1
N
Y
N
*2
Y
Y
N
Y
N
10-6
Chapter 10 Troubleshooting
There is the possibility that is set
up to a self diagnosis mode. Set
normal operation mode (DIP SW
bit 1, 2, 7, 8: OFF)
(4) See connection open
1
error.
- Check the I/O area for sending.
- EH-ETH may be requested to
send the next data before the
current data sending completed.
Configure the interval time
longer.
- Check the I/O area for receiving.
- EH-ETH may receive the next
data before the current data
receiving completed. Configure
the interval time longer in the
sending station.