Chapter 6. Errors and error recovery
(8) Peripheral data receiving time-out, sum error, address error, response time-out
ERR LED
Flicker at 1 sec intervals
- Error information of own station : bit13 ON
- Error information of each station : bit13 ON
or
- Error information of own station : bit13 ON
- Error information of each station : bit15 ON
Has an error occurred
in the loop-back check?
It may be assumed that this is a
temporary problem caused by noise, etc.
Observe developments for a while.
Run a loop-back check (refer to
section 7.3.)
YES
NO
Does it happen frequently?
Is the power supply
to the station displayed as the
opposing station on?
Has an error occurred
in the station displayed as the
opposing station?
Is the optical cable coming loose?
Switch on the power supply to the
station.
Locate the error on the station in which
the error occurred.
Secure the optical cable firmly in place.
NO
NO
YES
YES
YES
NO
NO
YES
Replace the module with a spare one,
if available.
Notify your local authorized distributor
of it.
Does the loss of the optical
cable satisfy a standard? *
It expects that there is a problem in the
optical cable itself, the connector
installation work, and so on. Exchange it.
YES
*
A transmission time-out error is triggered in the peripheral device when an error occurs or the power is
switched of in the opposing link module during the sending and receiving of data with other stations.
(9) Link power supply cut-off
The data prevalent immediately prior to the power supply being switched off contained in the receiving
area of other stations that are receiving data from the cut-off station will be saved when the cut-off error
occurs during operations.
6-8
