MITSUBISHI ELECTRIC 700 Series - Manual (Page 13)

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Prior to Sequence Program Creation
1.5.4 Sequence program write
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 7).
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 4).
5) Refer to the GX Developer manual and write the sequence program.
POINT
Sequence program write can be performed in any operation mode.
REMARKS
Check and set the communication specification parameter (Pr. 117 to Pr. 124) using
the parameter unit (FR-PU04/FR-PU07). (Refer to the FR-PU04/FR-PU07
instruction manual for the handling of the FR-PU04/FR-PU07.) GX Developer and
the FR-PU04/FR-PU07 cannot be connected and used simultaneously.
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)