Mitsubishi Electric MELSEC FX3U Programming Manual page 58

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
2
Setting memory capacity
Set item
Memory capacity
Comments capacity
File register capacity
Program capacity
Special Function
Memory capacity
Special Function
Block Settings
*2
(8 Blocks)
Positioning
Instruction Settings
(18 Blocks)
Built-in CC-Link/LT
*3
Setup
*1. The initial value is 8000 steps in GX Developer Ver. 8.22 or earlier and FX
*2. This function is supported only in FX
*3. This item is supported only in the FX
Caution
FX PLCs operate in the extension mode when the program capacity (which is available for sequence
3G
programs, and excludes the comment capacity, file register capacity, etc.) is 16,001 steps or more, and
operate in the standard mode when the program capacity is 16,000 steps or less.
The instruction execution time is shorter in the standard mode than in the extension mode.
Example:
56
Set the program memory capacity. Initial value: 16000
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.
Select whether the special unit initial value settings and positioning settings will be
used or not.
Selects the initial value setting function for special function block/unit. (When this
function is valid, the special unit setting is displayed on "I/O assignment" tab.)
Validates the TBL (FNC152) instruction setting function.
(When this function is valid, the "Positioning" tab is displayed.)
Validates the CC-Link/LT station information setting function.
Time required to execute the basic instruction "LD"
Standard mode: 0.21 µs
This example shows a window in an
FX
3U
Contents of setting
/FX PLCs.
3U 3UC
-32MT-LT-2.
3UC
Extension mode: 0.42 µs
2 Overview (Sequence Program)
2.7 Types and Setting of Parameters
/FX PLC.
3UC
*1
PLCs.
3G
Setting range
Refer to
Subsection
2.7.3.
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