APPENDICES
APP - 10
MELSEC-
Table 2.1 Special relay list (Continue)
Number Name Description Details Applicable CPU
M9060
Remote terminal
error
OFF: Normal
ON: Error
• Turned on when one of remote terminal modules has
become a faulty station.
(Communication error is detected when normal
communication is not restored after the number of
retries set at D9174.)
• Turned off when communication with all re-mote
terminal modules is restored to normal with
automatic online return enabled.
• Remains on when automatic online return is
disabled.
• Not turned on or off when communication is
suspended at error detection.
—
Usable with A2C
and A52G
M9061
Communication
error
OFF: Normal
ON: Error
• Turned on when communication with a remote
terminal module or an I/O module is faulty.
• Communication error occurs due to the following
reasons.
• Initial data error
• Cable breakage
• Power off for remote terminal modules or I/O
modules
• Turned off when communication is restored to
normal with automatic online return enabled
• Remains on when communication is suspended at
error detection with automatic online return disabled.
—
Usable with A2C
and A52G
M9065
Divided transfer
status
OFF: Other than divided
processing
ON: Divided processing
• Turned on when canvas screen transfer to AD57
(S1)/AD58 is done by divided processing, and turned
off at completion of divided processing.
—
Usable with AnA,
and AnU.
2
M9066
Transfer
processing
switching
OFF: Batch transfer
ON: Divided transfer
• Turned on when canvas screen transfer to AD57
(S1)/AD58 is done by divided processing.
—
Usable with AnA,
and AnU.
M9067
I/O module error
detection
OFF: Normal
ON: Error
• Turned on when one of I/O modules has become a
faulty station.
( Communication error is detected when normal
communication is not restored after the number of
retries set at D9174.)
• Turned off when communication with all I/O modules
is restored to normal with automatic online return
enabled.
• Remains on when automatic online return is
disabled.
• Not turned on or off when communication is
suspended at error detection.
—
Usable with A2C
and A52G.
M9068 Test mode
OFF: Automatic online
return enabled
Automatic online
return disabled
Communication
suspended at
online error
ON: Line check
• Turned on when line check with I/O modules and
remote terminal modules is performed.
• Turned off when communication with I/O modules
and remote terminal modules is per-formed.
—
Usable with A2C
and A52G.
M9069
Output at line
error
OFF: All outputs are
turned off.
ON: Outputs are
retained.
• Sets whether all outputs are turned off or retained at
communication error.
OFF: ...........All outputs are turned off at
communication error.
ON:.............Outputs before communication error are
retained.
—
Usable with A2C
and A52G.
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