Sequence Program Write - Mitsubishi Electric FR - F700 Programming Manual

1.8.5

Sequence program write

POINT
Sequence program write can be performed in any operation mode (External
operation mode/PU operation mode/Network operation mode). Refer to the
inverter manual for operation mode.
When rewriting the PLC function parameters and sequence program using GX
Developer, check the following:
1) Check that the sequence program execution key is in the STOP position (SQ signal
is off) (refer to page 9).
2) Check that the inverter is at a stop.
3) Check that the communication specification setting parameters (Pr.117 to Pr.124) are
set correctly. If any of these parameters is set incorrectly, communication with GX
Developer cannot be made.
4) Check the PLC series and sequence program capacity in the GX Developer
parameters (refer to page 5).
5) Refer to the GX Developer manual and write the sequence program.
CAUTION
•A sequence program cannot be written with its steps specified. If written,
the sequence program does not run. (The program outside the specified
range is initialized.)
•Do not read the built-in PLC function parameters and sequence program
without writing them to the inverter once using GX Developer. Since the
inverter does not have normal data, always write the built-in PLC function
parameters and sequence program once.
•Since the built-in PLC function parameters and sequence program are
written to the flash ROM, there are restrictions on the number of write times.
(Approximately 100,000 times)
•4K step or more can not be written.
Number of steps usable when a program capacity is 4K step are calculated
as below.
× 1024-2 steps = 4094 steps
4
Therefore, the write area is 0 to 4094 steps.
Prior to sequence program creation
1
11