Input And Output Settings When Failure Occurs - Mitsubishi Electric MELSEC iQ-F FX5 User Manual

Input and output settings when failure occurs

A master/intelligent device module allows for the following settings.
Setting
Input Data from Data Link Faulty Station
Data link Setting at CPU Failure
• When the Input Data from Data Link Faulty Station is set to "hold", although the value of the buffer memory
storing the target data is retained after the occurrence of the data link error, since the data link is
disconnected, it is not refreshed.
• When the Data Link Setting at CPU Failure is set to "continue", the data link will continue even if a stop error
occurs in the CPU module. When resetting the CPU module or turning off and on the power supply of the
CPU module while the data link is in the continuous state after a stop error has occurred in the CPU module,
the data link of the master/intelligent device module stops once and then it restarts after the CPU module
starts normally.
Master station
Remote input (RX)
Station No.1
Station No.2
Station No.3
Station No.4
Remote output (RY)
Station No.1
Station No.2
Station No.3
Station No.4
Remote register
(RWr)
Station No.1
Station No.2
Station No.3
Station No.4
Remote register
(RWw)
Station No.1
Station No.2
Station No.3
Station No.4
4 FUNCTIONS
38
4.2 Cyclic Transmission
Remote I/O station Remote device station
(station No.1) (station No.2)
Input
Remote input (RX)
Output
Remote output (RY)
Remote register
(RWr)
Remote register
(RWw)
Range where the settings are enabled
Clearing or holding the following RX, RY, and RWw input data from other stations can be
selected.
• Master station RX (when operating as a master station)
• Intelligent device station RY and RWw (when operating as an intelligent device station)
The RWr input data from other stations are held regardless of any setting.
• Master station RWr (when operating as a master station)
Whether to stop or continue data link when a stop error occurs in the CPU module of a master
station can be selected.
Intelligent device station
(FX5-CCL-MS)
(station No.3)
Remote input (RX)
Station No.3
Remote output (RY)
Station No.3
Remote register
(RWr)
Station No.3
Remote register
(RWw)
Station No.3
Target areas for clear/hold
Areas held regardless of the setting
Intelligent device station
(station No.4)
Remote input (RX)
Remote output (RY)
Remote register
(RWr)
Remote register
(RWw)