1. List of Alarms
1.7 Messages During Emergency Stop
I - 36
Error No.
Details
Remedy
LINK
MELSEC is held in error and reset states.
• Check the MELSEC states.
The contents of MELSEC-specific code
area in buffer memory have been
destroyed.
• Check the MELSEC states.
PLC serial link communication has stopped.
Note: When WAIT is entered for the PLC
serial link, only the preparation
sequence has been established
before the communication stops.
Therefore, it is supposed that the
basic specification parameters
related to serial link parameters
#1902 and #1903 are incorrect or
the #1909 set-time "Tout (ini)" is too
short.
• Check that HR571 card wiring and external
sequencer transmission are normal.
• Check the diagnostic screen for link
communication errors.
• Check whether the basic specification
parameters related to serial link parameters
are specified correctly.
WAIT
The preparation sequence is not sent from
the master station. Otherwise, the contents
of the received preparation sequence are
inconsistent with those of the parameters,
so that the usual sequence cannot be
started.
Note: When LINK is also entered for the
PLC serial link, refer to "Note" in the
section, "LINK".
• Check that the HR571 card rotary switch
and wiring and the external sequencer
transmission are normal.
• Check the diagnostic screen for link
communication errors.
XTEN
The HR571 card operates abnormally or
the rotary switch is set incorrectly.
• Check the HR571 card rotary switch and
replace the HR571 card if required.
LAD
The user PLC (ladder sequence) has an
illegal code.
• Check the user PLC (ladder sequence) to
see if it uses illegal device numbers or
constants.
Summary of Contents for MELDAS 60 Series
Page 1: ......
Page 2: ......
Page 4: ......
Page 6: ......
Page 10: ......
Page 13: ...I EXPLANATION OF ALARMS ...
Page 14: ......
Page 95: ...II EXPLANATION OF PARAMETERS ...
Page 96: ......
Page 443: ......