Omron SYSDRIVE 3G3MV - Parameter Description

7-40
D Sequence
·When repeating actions to give the RUN command and frequency reference to the
Inverter and readthestatus of theInverter, for example,the actions can beregistered
as one sequence, or more than one if necessary. In 7-9-4 Creating a Project File, an
example is shown with all actions registered as a single sequence.
·A sequence may include the following parameters.
Parameter Description
Transmission
control parameter
Set the method of control, such as flow control.
Note Select only model control for communications with the 3G3MV.
Link word Set the area for sharing the data between the Programmable
Controller and Communications Board.
Note In 7-9-4 Creating a Project File, an example is shown without
such an area set.
Monitor time Set the periods to monitor the transmission and reception steps with
timers Tr, Tfr, and Tfs.
Note Set a period of approximately 0.5 s each for communications
with the 3G3MV.
Response notify
method
A method to write reception data to the I/O memory of the
Programmable Controller.
Note Select “notify by scan” for communications with the 3G3MV.
CPU Unit
PMCR
instruction
Communications
Board
Step 00
DSR message
(Write the RUN command and
frequency reference.)
Response
Step 01
DSR message
Inverter status read
Response
(Inverter status)
3G3MV
Sequence 000
D Step
·In a single step, a DSR message is sent and a response for the DSR message is
received. A step may not include a response if it is a broadcast message.
Communications Chapter 7