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

Supplementary Cyclic Settings

Set the data link monitoring time and system switching monitoring time.
Item
Data Link Monitoring Time
*1
System Switching Monitoring Time
Constant Link Scan Time
Maximum No. of Returns to System Stations in 1
Scan
Control Station Shift Setting
Block send data assurance per station
Block receive data assurance per station
Transient Setting Maximum No. of
Transient
Transmissions
Maximum No. of
Transient in One
Station
Low-Speed Cyclic Low-Speed Cyclic
Setting Setting
Fixed Interval Cycle
Setting
System Timer Setting
1 to 8
*1 When 'System switching monitoring time setting valid flag' (SB0018) is enabled, the setting value of 'System switching monitoring time
setting' (SW0018) is prioritized.
Description
Set the time for monitoring the link scan time in units of 10ms.
Normally, it is recommended to use the default value.
If the link scan time exceeds the value set in "Data Link Monitoring
Time", data linking is disabled.
Set the time (in increments of 10ms) from data link stop ('Data link
error status of own station' (SB0049) is turned on) to issuance of a
system switching request.
Set the constant link scan time. This will keep the link scan time at
the set time.
Set the number of communication faulty stations that can be returned
during one link scan. (Unit: Station)
Set this item when another normal station in the network continues
cyclic transmission as an alternate station (sub-control station) when
the specified control station is disconnected due to an error.
Set this item to prevent data inconsistency of the link data per station
during cyclic transmission. This setting enables data operation of
multiple words without interlocking. However, data inconsistency
prevention function is enabled only during the link refresh processing
between the CPU module and RJ71LP21-25.
(Page 30 Data assurance)
The default settings are shown below:
• MELSECNET/H mode, MELSECNET/10 mode: Disable
• MELSECNET/H extended mode: Enable
Set the number of transient transmissions that can be performed in
one link scan.
Set the number of transient transmissions that one station can
perform in a link scan.
Set the sending method of low speed cyclic transmission.
For details, refer to the following.
Page 21 Sending timing
Performs low speed cyclic transmission at the set period.
Performs low speed cyclic transmission at the set date and time.
Time/minute/second cannot be omitted in the system timer.
Setting range
10ms to 2000ms
Default: 2000ms
10ms to 5000ms
Default: 2000ms
1ms to 500ms
Default: Blank
1 to 64
Default: 2
• Set
• Not Set
Default: Set
• Disable
• Enable
Default: As shown on the left
1 to 255 times
Default: 2 times
1 to 10 times
Default: 2 times
• Do not Set
• Transmit Data of One Station in
1 Scan.
• Fixed Interval Cycle Setting
• System Timer Setting
Default: Do not Set
1 to 65535 seconds
Default: Blank
Number of set points: 1 to 8 points
(Year/Month/day/Time/Minute/
Second)
2 PARAMETER SETTINGS
2.4 Application Settings
2
65