Cautions On Write During Run - Mitsubishi Electric MELSEQ FX3S Series User Manual

FX Series Programmable Controllers
3S
User's Manual - Hardware Edition
5.2.5

Cautions on write during RUN

Write during RUN (program changes during RUN) is available in the FX
However, list programs and SFC programs cannot be written during RUN.
When programming software not supporting the FX
function range available in both the FX
Cautions on write during RUN
Program memories which can be written in
RUN mode
Number of program steps which can be written
for circuit change in RUN mode
Circuit blocks which cannot be written in RUN
mode
*1. Circuit blocks cannot be edited to insert a label as shown below when written during RUN.
Step 0
Pointer for
interrupt
I001
PLC and the PLC selected as the alternative model.
3S
→ Refer to the manual of the used programming software for the operations
Item
Built-in EEPROM and optional memory cassette (whose write protect switch is set to
OFF)
256 steps or less after edition (addition/deletion)
(including NOP immediately after circuit blocks except final circuit)
Circuit blocks
Circuit blocks in which 1 ms timers (T63 to T131) are added in edited circuits
Circuit blocks in which the following instructions are included in edited circuits
• Instruction to output high-speed counters C235 to C255 (OUT instruction)
FNC 04
EI
Added, deleted, or changed
FNC 06
FEND
Label I is inserted by editing the circuit block
Added, deleted, or changed
FNC 03
IRET
END
5 Version Information and Peripheral Equipment Connectability
3S
PLC is used, write during RUN is available within the
3S
for and cautions on write during RUN.
Caution
*1
in which labels P and I are added, deleted or changed in edited circuits
5.2 Programming Tool Applicability
PLC when GX Works2 is used.
1
2
3
4
5
6
7
8
9
10
43