Hitachi Hidic EH-150 Applications Manual page 96

Preliminary Rev.03
(3) ERR LED light
It is thought as the abnormality of the whole PLC
system or network devices, if so as not to recover
even if the power supply of the whole system is input.
Contact a Hitachi sales office or your distributor.
*1: The time for several minutes may be needed by the setting value of ASR connection timeout
*2: You need to make a ladder program, to confirm the establishment situation of a connection.
The contents of this manual might be changed without notice.
ERR LED light *1
Normal operation mode
Y
*2
Establish a connection
Y
Data specified sending source
does not transmit to the other
equipment
N
Data from the other equipment
does not stored in receiving area
N
There is the possibility that is set
N
up to a self diagnosis mode. Set
normal operation mode (DIP SW
bit 1, 2, 7, 8: OFF)
N
1
- There is the possibility that the
unassigned external I/O are
specified as sending area.
- There is possibility that it is too
Y
fast to execute next send request
after issue send request.
Postpone the sending interval.
- There is the possibility that the
external output (WY) specified
as receiving area is not assigned
- There is possibility that it is too
many or frequency to store the
Y
receiving data to receiving area.
10-3
Chapter 10 Troubleshooting
(4) See connection open
error.