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Selection of operation mode and operation location
4
PARAMETERS
4.17.3 Start command source and speed command source during communication
operation (Pr.338, Pr.339, Pr.550, Pr.551)
(1) Select the command source of the Network operation mode (Pr.550)
Either the RS-485 communication with the PU connector or communication option can be specified as the command
source in the Network operation mode.
For example, set Pr.550 to "2" when executing parameter write, start command or speed command from the unit RS- 485
terminals in the Network operation mode independently of whether the communication option is connected or not.
When the RS-485 communication with the PU connector or communication option is used, the external start command
and speed command can be valid. Command source in the PU operation mode can be selected.
From the communication device, parameter unit, etc. which have command source, parameter write or start command
can be executed. Parameter read or monitoring can be executed in any operation mode.
Parameter
number
Name
Initial
value
Setting
range
Description
338
Communication operation
command source
0
0 Start command source communication
1 Start command source external
339
Communication speed
command source
0
0 Speed command source communication
1 Speed command source external
2
Speed command source external (When there is no
external input, the speed command via communication is
valid, and the speed command from terminal 2 is invalid.)
550
NET mode operation
command source selection
9999
0
The communication option is the command source when
NET operation mode.
2
PU connector is the command source when NET operation
mode.
9999
Automatic communication option recognition
Normally, PU connector is the command source. When a
communication option is mounted, the communication
option is the command source.
551
PU mode operation
command source selection
9999
2
PU connector is the command source when PU operation
mode.
3
USB connector is the command source when PU operation
mode.
4
Operation panel is the command source when PU
operation mode.
9999
USB automatic recognition
Normally, operation panel is the command source. When
the parameter unit is connected to the PU connector, PU is
the command source. When USB is connected, USB
connector is the command source.
The above parameters can be set when Pr.160 Extended function display selection = "0". However, the parameters can be set whenever the
communication option is connected. (Refer to page 182 )
This parameter can be changed during a stop in any operation mode.
NOTE
Since
Pr.550
= "9999" (automatic communication option recognition) in the initial setting, parameter write, start
command and speed command cannot be executed by communication using the unit RS-485 terminals when the
communication option is fitted.