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Allocated DM Area Words Section 3-3
Note If the setting is smaller than the optimum communications cycle time calcu-
lated by the Unit and stored internally in the Unit, then the value calculated by
the Unit will be used.
3-3-2 Master User Allocations Setup Table
This table is set by the user to specify the I/O words used by the master. Only
OUT block 1 and IN block 1 can be set using this table.
Note OUT blocks 1 and 2 and IN blocks 1 and 2 can be set from the Configurator.
I/O allocations can be updated in the master by setting this table and turning
ON the Master User-set Allocations Switch (word n, bit 11). The Unit will
restart automatically and start operating with the scan list enabled.
Name Range Details
Communications
Cycle Time Set-
ting
0000 to 01F4 Hex
(0 to 500)
Sets the communications cycle time in milli-
seconds. Setting range: 0 to 500 ms
If this bit is set to 0, the optimum time calcu-
lated by the Unit will be used. If a value
higher than 500 ms is set, then the Unit will
operate at 500 ms.
If the setting cannot be correctly made for
some reason, the Scan List Register/Clear
Failed Flag (word n+12, bit 11) in Master Sta-
tus 1 and the Temporary Setting Switch for
Communications Cycle Time (word n, bit 12)
will be turned OFF.
Word
Bit 15 Bit 00
Communications cycle time setting (ms)
m
Word
Bit 15 Bit 08 Bit 07 Bit 00
Reserved by system
OUT block 1 area
m+1
First word in OUT block 1
m+2
Reserved by system
IN block 1 area
m+3
First word in IN block 1
m+4
Reserved by system
Allocation size setup table area
m+5
First word in the allocation size setup table
m+6
Setting results
m+7