Mitsubishi Electric FR-A820-00046 (0.4K), Instruction Manual

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Parameters CC-Link IE Field Network (FR-A800-GF)
FR-A800 5 - 769
5.21.6 Instructions
Programming instructions
●
Since the buffer memory data of the master station is kept transferred (refreshed) to/from the
inverters, the TO instruction need not be executed every scan in response to data write or read
requests. (The execution of the TO instruction every scan does not pose any problem.)
●
If the FROM/TO instruction is executed frequently, data may not be written reliably.
When transferring data between the inverter and sequence program via the buffer memory,
perform the handshake to confirm that data has been written without error.
Operating and handling instructions
●
The commands only from the programmable controller can be accepted during CC-Link IE Field
Network communication. The run command from external and parameter unit is ignored.
●
If different inverters have the same station number, the communication cannot be performed
properly.
●
The inverter protective function (E.OP1) is activated if data communication stops for more than
the time set in Pr. 500 "Communication error execution waiting time" due to a programmable
controller fault, an open Ethernet cable etc. during CC-Link IE Field Network operation.
●
If the programmable controller (master station) is reset during CC-Link IE Field Network operation
or if the programmable controller is powered OFF, data communication stops and the inverter
protective function (E.OP1) is activated.
To reset the programmable controller (master station), switch the operation mode to the External
operation once, then reset the programmable controller.
●
When Pr. 340 = "0 (initial value)", any inverter whose main power is restored is reset to return to
the External operation mode. To resume the Network operation, therefore, set the operation mode
to the Network operation using the programmable controller program.
Set a value other than "0" in Pr. 340 to start in the Network operation mode after inverter reset.
I003095E, I003096E
Fig. 5-383: Data exchange with/without handshake
Correct!
TO instruction
Incorrect!
Write completion
TO instruction
Write completion