Mitsubishi Electric FR-A800, Instruction Manual

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(D) Operation command and frequency command Parameters
5 - 274
5.9.3 Start command source and frequency command source during communication
operation
The start and frequency commands from an external device can be made valid when using the RS-485
terminals or the communication option. The command source in the PU operation mode can also be
selected.
Selection of command source in Network operation mode (Pr. 550)
●
Either of the RS-485 terminals or the communication option can be specified for the command
source in the Network operation mode.
●
For example, whether or not the communication option is mounted, set Pr. 550 = "1" to write
parameters from or input the start and frequency commands via RS-485 terminals in the Network
operation mode.
Pr. Name Initial value Setting range Description
338
D010
Communication operation
command source
0
0
Start command source is
communication.
1 Start command source is external.
339
D011
Communication speed command
source
0
0
Frequency command source is
communication.
1
Frequency command source is
external.
2
Frequency command source is
external. (When there is no external
input, the frequency command via
communication is valid, and the
frequency command from terminal 2
is invalid.)
550
D012
NET mode operation command
source selection
9999
0
The communication option is the
command source when in the NET
operation mode.
1
The RS-485 terminals are the
command source when in the NET
operation mode.
9999
Communication option is recognized
automatically.
Normally, the RS-485 terminals are
the command source. When the
communication option is mounted,
the communication option is the
command source.
551
D013
PU mode operation command
source selection
9999
1
The RS-485 terminals are the
command source when in the PU
operation mode.
2
The PU connector is the command
source when in the PU operation
mode.
3
The USB connector is the command
source when in the PU operation
mode.
9999
USB automatic recognition
Normally, the PU connector is the
command source. When the USB is
connected, the USB connector is the
command source.
NOTE In the initial setting, "9999" (communication option automatic recognition) is set for Pr. 550. Thus,
if the communication option is mounted, parameters cannot be written or the start and frequency
commands cannot be sent by communications that use the RS-485 terminals. (Monitoring or
parameter reading can be performed.)