10 Buffer Memory
10.3 Parameter information area
98
FX3U-16CCL-M User's Manual
10.3.2 [BFM#1] Number of connected units
Set the number of connected remote stations and intelligent device stations.
Caution
• Including reserved stations.
• This is not a station count.
10.3.3 [BFM#2] Number of retries
Set the number of retries to a remote station and intelligent device station with a link data error.
If a remote stations and intelligent device stations cannot recover the normal data link after executing the
specified number of retries, the station is regarded as a "data link faulty station".
10.3.4 [BFM#3] Number of automatic return units
Set the number of remote stations and intelligent device stations that can return to the system during one link
scan.
→ For details on the number of automatic return units, refer to Subsection 6.3.2.
10.3.5 [BFM#6] Operation specification when CPU is down
Specify the data link status when an "operation stop error" occurs in the master station PLC.
→ For details on the operation specification when CPU is down, refer to Subsection 6.3.3
Caution
Even if an operation continue error occurs in the master station PLC, the data link continues.
10.3.6 [BFM#12] Data link disorder station setting
Sets the input data status from the data link disorder station.
→ For details on the data link disorder station setting, refer to Subsection 6.3.4.
Caution
When values other than 0 or 1 are set, "Clear" operation is performed.
BFM No.
Description R/W Default
Hex. Dec.
#1H #1
Setting range:
For FX3U/FX3UC PLC
1 to 16 (units)
For FX3G PLC
1 to 12 (units)
R/W K8
BFM No.
Description R/W Default
Hex. Dec.
#2H #2 Setting range: 1 to 7 (times) R/W K3
BFM No.
Description R/W Default
Hex. Dec.
#3H #3 Setting range: 1 to 10 (units) R/W K1
BFM No.
Description R/W Default
Hex. Dec.
#6H #6
0: Stop
1: Continue
R/W K0
BFM No.
Description R/W Default
Hex. Dec.
#0CH #12
0: Hold
1: Clear
R/W K1
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