3.3 Operation & Speed Command Source (Pr. 338, Pr. 339, Pr. 550)
(1) Select control source for NET mode (Pr. 550)
The control location for NET mode can be selected to be from either the inverter’s RS-485 port or a
plug-on communication option card. Therefore, to control the inverter via the option card, Pr. 550 must
be set to either “9999” (default) or “0” (Communication option input valid).
Name
Description
550
NET mode
operation
command source
selection
9999
0
Communication option card control is valid
(A7NETH-2P control is valid.)
1
Control via the inverter’s RS-485 port
(A7NETH-2P control is invalid.)
9999
Communication option automatic recognition.
Normally, control via the inverter’s RS-485 port
is valid. When an A7NETH-2P communication
option card is installed, that communication
option card’s control is made valid instead of
the inverter’s RS-485 port.
Refer to the inverter’s user’s manual (applied) for further details.
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