During Communication Operation - Mitsubishi Electric FR-A820-00046 Instruction Manual

(D) Operation command and frequency command
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.
Pr.
338
D010
339
D011
550
D012
551
D013
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.
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.)
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Name
Communication operation
command source
Communication speed command
source
NET mode operation command
source selection
PU mode operation command
source selection
Initial value Setting range
0
0
1
0
1
0
2
0
1
9999
9999
1
2
9999
3
9999
Parameters
Description
Start command source is
communication.
Start command source is external.
Frequency command source is
communication.
Frequency command source is
external.
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.)
The communication option is the
command source when in the NET
operation mode.
The RS-485 terminals are the
command source when in the NET
operation mode.
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.
The RS-485 terminals are the
command source when in the PU
operation mode.
The PU connector is the command
source when in the PU operation
mode.
The USB connector is the command
source when in the PU operation
mode.
USB automatic recognition
Normally, the PU connector is the
command source. When the USB is
connected, the USB connector is the
command source.