Specifications

3 - 4
Number Name Description
8 L ERR. Red on A communication error occurred. (One of the following
communication errors has occurred):
CRC : Error generated by an abnormal cable, noise, etc.
OVER : This error occurs when the next data is received
before the last receive data is loaded into the
module, and the data is overwritten. It is caused
by a hardware error in the receive area of the
network module.
AB.IF : This error occurs when more than the specified
number of bits are set to "1" among the receive
data in the frame, or when the receive data is
shorter than the specified data length.
TIME : This error occurs when a baton pass was not
handed to the host within the monitoring time.
DATA : This error is caused when abnormal code data is
received.
UNDER : This error occurs when the internal processing of
the send data was not executed at a fixed interval.
LOOP : This error occurs when the forward or reverse loop
line is faulty and the power to the adjacent station,
which sends data to the host station, is turned
OFF or the cable connector is faulty.
<Corrective action> Check the cables and connectors.
(Detached or loosened connectors,
wrong IN/OUT connections, broken or
damaged cables, improper cable
routing, etc.)
3)
No
2
4
6
8
No
1
3
5
7
Off No communication error