Mitsubishi Electric MELSEC L Series User Manual page 72

(3) Output status for each status
Depending on the status of the data link and head module, data may not be able to be output.
The following table summarizes how the status of the data link and head module affect the output (Y).
Head module
Switch
RUN Operating normally
RUN Operating normally
RUN Operating normally

STOP Operating normally
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Data link
status status
Cyclic
transmission
being
performed
Cyclic
transmission
stopped
Disconnected

Error

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The output differs depending on the status and setting of the master station. (
User's manual for the master/local module used)
(1) When the CPU module on the master station is in the stop error state:
The output (Y) status is determined by the "Error Time Output Mode" setting of
PLC parameter. ( Page 61, Section 7.1 (6))
The analog output status from the digital-analog converter module and the
analog I/O module is determined by the setting of the analog output
HOLD/CLEAR function.
MELSEC-L Digital-Analog Converter Module User's Manual
MELSEC-L Analog Input/Output Module User's Manual
(2) When the CPU module on the master station is in the STOP state:
The output (Y) is determined by the refresh parameters (refresh device of RY
for the head module) of the master station.
 If "Y" is specified for the device of the CPU module, the output (Y) of the head
module turns off.
 If "other than Y (such as M, L)" is specified for the device of the CPU module,
the output (Y) of the head module depends on the "Output Setting During CPU
STOP" setting of the master station.
The analog output status from the digital-analog converter module and the
analog I/O module is determined by the setting of the analog output
HOLD/CLEAR function.
MELSEC-L Digital-Analog Converter Module User's Manual
MELSEC-L Analog Input/Output Module User's Manual
The output (Y) status is determined by the "Error Time Output Mode" setting of PLC
parameter. ( Page 61, Section 7.1 (6))
The analog output status from the digital-analog converter module and the analog
I/O module is determined by the setting of the analog output HOLD/CLEAR function.
MELSEC-L Digital-Analog Converter Module User's Manual
MELSEC-L Analog Input/Output Module User's Manual
The output (Y) is held for two seconds after the communication with the master
station is terminated due to a problem such as disconnection of the Ethernet cable.
The output (Y) status after disconnection is determined by the "Error Time Output
Mode" setting of PLC parameter. (
The output (Y) status is determined by the "Error Time Output Mode" setting of PLC
parameter. ( Page 61, Section 7.1 (6))
The analog output status from the digital-analog converter module and the analog
I/O module is determined by the setting of the analog output HOLD/CLEAR function.
MELSEC-L Digital-Analog Converter Module User's Manual
MELSEC-L Analog Input/Output Module User's Manual
The output (Y) turns off.
: Not dependent on the status
Output (Y) status
Page 61, Section 7.1 (6))