I/O Maintenance Settings - Mitsubishi Electric MELSEC iQ-R Series User Manual

I/O maintenance settings

When using cyclic transmission, set whether to hold or clear output on the sending side or input on the receiving side by using
the following setting of (A), (B), or (C). ( Page 110 Supplementary Cyclic Settings)
• Setting on sending side (A): "Output Mode upon CPU Error" for if a stop error occurred in the CPU module on the sending
side
• Setting on sending side (B): "Output Hold/Clear Setting during CPU STOP" for if the status of the CPU module on the
sending side changed from RUN to STOP
• Setting on receiving side (C): "Data Link Faulty Station Setting" for if the sending side disconnected
[Application Settings]  [Supplementary Cyclic Settings]  [I/O Maintenance Settings]
Input data hold/clear operation on the receiving side
No.0
(A)
(B)
■If a CPU module stop error occurred on the sending side
• If both settings (A) and (B) on the sending side are "Hold", input data on the receiving side is held.
• If setting (A) or (B) on the sending side is "Clear", input data on the receiving side is cleared. (The sending side sends the
data cleared to 0.)
■If the CPU module on the sending side changed from RUN to STOP
• If setting (B) on the sending side is "Hold", input data on the receiving side is held.
• If setting (B) on the sending side is "Clear", input data on the receiving side is cleared. (The sending side sends the data
cleared to 0.)
■If the sending side disconnected
• If setting (C) on the receiving side is "Hold", input data from before disconnection is held on the receiving side.
• If setting (C) on the receiving side is "Clear", input data on the receiving side is cleared.
Devices where hold/clear settings are enabled
The following table and figure show devices for which the settings on the sending side (A)(B) and the setting on the receiving
side (C) are enabled.
Setting to Setting items
Setting on Output mode upon CPU error
sending side (A)
Setting on Output hold/clear setting
sending side (B) during CPU STOP
Setting on Data link faulty station setting
receiving side (C)
1 FUNCTIONS
44
1.1 Cyclic Transmission
No.1
(C)
Hold/clear settings are
enabled
• Master station RY
• Local station RY (only the
output data from the own
station)
• Master station RY (if the link
refresh source device is other
than Y)
• Local station RY (only the
output data from the own
station, and if the link refresh
source device is other than Y)
• Master station RX
• Local station RX
• Local station RY (only the
input data from other stations)
Hold regardless of setting

• Master station RWw
• Local station RWw (only the
output data from the own
station)
• LB (only the output data from
the own station)
• LW (only the output data from
the own station)
• Master station RWr
• Local station RWr
• Local station RWw (only the
input data from other stations)
• LB (only the input data from
other stations)
• LW (only the input data from
other stations)
Clear regardless of
setting

• Master station RY (if the link
refresh source device is Y)
• Local station RY (only the
output data from the own
station, and if the link refresh
source device is Y)
