User`s manual

5 FUNCTIONS
19
5.2 Basic Functions
The section describes the basic functions that can be done from the PLC using the CC-Link communications function.
5.2.1 Run Command and Frequency Reference
Running or stopping the inverter, or setting or changing the operation frequencies can be done from the PLC.
To perform these operations from the PLC, the right to use the inverter run command and the frquency references must
be assigned to the inverter to the PLC side.
The following describes how to switch the right to use the inverter run command and frequency references to the PLC
side.
How to Switch the Command Priority/Right
a. Switching via Drive Parameter Settings
Run Command Selection b1-02 = 3: "Option Card" (0: "External terminal" is the factory setting)
Freq Ref Right Selection b1-01 = 3: "Option Card" (0: "External terminal" is the factory setting)
b. Switching via the external terminals on the Drive
Allocate one of the external control terminals S3 to S12 for the multi-function input function "Option/Inverter
Selection" by setting value 2. Turning ON the terminal input at the side for the option card can switch the commanding
right setting to the PLC side.
When the inverter is selected, the commanding right setting depends on the settings of the parameters b1-01 and b1-02.
If the commanding right setting has been assigned by setting the inverter parameters, the commanding right setting
always belongs to the option card.
c. Switching by the PLC (Inverter Parameter Setting)
Run command right selection:
Send write-in data "3" from the the command code "2181h" to the inverter.
The setting of inverter constant b1-02 is changed to 3.
Frequency reference right selection:
Send write-in data "3" from the command code "2180h" to the inverter.
The setting of inverter constant b1-01 is changed to 3.
Priority of PLC Commanding Right Setting
Run Command Rights
Setting Status
Local/Remote
Selection
Local Remote Remote Remote
b1-02 (Operation
method selection)
— 3 All others excluding 3
All others
excluding 3
Option/Inverter
Selection
— —
ON
Option
(communications)
OFF
Inverter
Run Command
Right
Operator PLC PLC
Depends on the
setting of b1-02.
Note: "—" indicates that the setting is disregarded.