Mitsubishi Electric MELSEC-Q Structured Programming Manual page 287

FXCPU Structured Programming Manual
[Device & Common]
2
Setting the memory capacity
Set item
Memory Capacity
Symbolic Information
*2
Capacity
Comment Capacity
File Register Capacity
Program Capacity
Special Function Memory
Capacity
Special Function Block
*2
Settings
Positioning Instruction
Settings
Built-in CC-Link/LT
*4
Settings
*1. This value is the case of FX
Available initial value vary depending on the PLC.
*2. This item is supported only in FX
*3. This item is supported only in FX
*4. This item is supported only in FX
Cautions
1) FX /FX
3G 3GC
and operate in the standard mode when the program capacity is 16,000 steps or less.
The instruction execution time is longer in the extension mode than in the standard mode.
Example: Time required to execute the basic instruction "LD"
Standard mode: 0.21 μs
2) In FX /FX
3U 3UC
When symbolic information is stored, it is deleted if the memory capacity set by parameters is changed.
After changing the memory capacity, write the symbolic information again.
3) When the memory capacity of the FX
and the total of the comment capacity and the file register capacity is limited to 12000 steps (24 blocks).
The comment capacity is automatically set when the file register capacity is set.
Select the program capacity. Initial value: 16000
The symbolic information capacity when the built-in memory or a memory cassette
is used is displayed here based on the "Memory Capacity" value.
Press the [Check Other Items] button to display the symbolic information capacity
when a memory cassette is used.
Set the capacity of comments to be stored in the PLC. Initial value: 0
50 device comments/block (500 steps)
Set the file register capacity. Initial value: 0
500 file registers/block (500 steps)
The number of steps available for sequence program is displayed here.
*3
Set whether the special unit initial value setting and positioning setting will be used
or not.
Check this item to make valid the initial value setting function for the special
function blocks/units.
Check this item to make valid the positioning setting function.
Check this item to make valid the station information setting function for the CC-
Link/LT.
/FX
3U 3UC
/FX
3U
/FX
3G
-32MT-LT-2.
3UC
PLCs operate in the extension mode when the program capacity is 16,001 steps or more,
Extension mode: 0.42 μs
PLCs Ver. 3.00 or later.
PLC is 16000 steps, the program capacity is fixed to 4000 steps,
3S
Contents of setting
*1
PLC.
PLCs.
3UC
/FX /FX PLCs.
3GC 3U 3UC
6 Types and Setting of Parameters
6.6 Parameter setting by GX Works2
Setting range
Refer to Section
6.3
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