Supplementary Cyclic Settings - Mitsubishi Electric MELSEC iQ-R Series User Manual

Supplementary Cyclic Settings

Set the station-based block data assurance, scan mode setting, or other parameters.
Item
Input Data from Data Link Faulty
Station
Output Mode upon CPU STOP
Station-based Block Data
Assurance
Number of Retries
Automatic Reconnection Station
Count
Data Link Setting at CPU Failure
Scan Mode Setting
Output Mode upon CPU Error
*1 When sequence scan takes more time than link scan, input transmission delay time becomes longer.
*2 The sequence scan must be constant as well. Set "Constant Scan Setting" in "RAS Setting" of "CPU Parameter".
Description
Set whether to clear or hold data input/output from a data link faulty station.
■Master station
The targets are remote input (RX) from the remote station and local station.
■Local station
The targets are remote input (RX) from the master station and remote
output (RY) from the remote station and local station.
Select whether remote output (RY) is refreshed (held at the value before
STOP) or cleared to zero (0) when the CPU module is set to STOP.
■Master station
The target is remote output (RY) to the slave station.
■Local station
The target is remote output (RY) to the master station.
Set whether to ensure a data integrity of the data blocks being refreshed
between the master/local module and the CPU module. ( Page 29
Station-based block data assurance)
To use this module in a redundant system, set "Station-based Block Data
Assurance" to "Disable". Even if "Station-based Block Data Assurance" is
set to "Enable", any data will not be assured for each station.
Set the number of retries for when a communication failure occurs.
Set the number of slave stations that return to the system operation by a
single link scan after the stations are disconnected due to a communication
failure.
Setting a larger number extends link scan time of when the station returns.
Set whether to stop or continue data link if a stop error occurs in a CPU
module. Note that this item cannot be used when the standby master
function is used.
Set the mode of the link scan.
■Asynchronous with Sequence Scan
Link scan is performed asynchronously with the sequence scan of the CPU
module.
Select this item to shorten input transmission delay time when sequence
scan takes much more time than link scan. Note that output transmission
delay time will become longer.
■Synchronous with Sequence Scan
Link scan is performed synchronously with the sequence scan of the CPU
module. Select this item in the following cases:
• To shorten the output transmission delay time
• To keep transmission delay time constant
Set whether to hold or clear the output when the CPU module is in stop
error.
Setting range
• Clear
• Hold
(Default: Clear)
• Send Remote Output (RY)
• Send 0 data
(Default: Send Remote Output (RY))
• Disable
• Enable
(Default: Disable)
1 to 7 Times
(Default: 3 Times)
1 to 10 PLC
(Default: 1 PLC)
• Stop the Data Link
• Continue the Data Link
(Default: Stop the Data Link)
• Asynchronous with Sequence Scan
• Synchronous with Sequence Scan
(Default: Asynchronous with Sequence
Scan)
*1
*2
• Clear
• Hold
(Default: Clear)
2 PARAMETER SETTINGS
2.4 Application Settings
2
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