Omron SYSDRIVE 3G3JV User Manual page 163

Communications
D Sequence
• When repeating actions to give the RUN command and frequency reference to the Inverter and read
the status of the Inverter, for example, the actions can be registered as one sequence, or more than
one if necessary. In 7-10-4 Creating a Project File, an example is shown with all actions registered as a
single sequence.
• A sequence may include the following parameters.
Parameter
Transmission control
parameter
Link word
Monitor time
Response notify
method
CPU Unit
PMCR
instruction
7-38
Set the method of control, such as flow control.
Note Select only model control for communications with the 3G3JV.
Set the area for sharing the data between the Programmable Controller and
Communications Board.
Note In 7-10-4 Creating a Project File, an example is shown without such an area
set.
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 3G3JV.
A method to write reception data to the I/O memory of the Programmable
Controller.
Note Select "notify by scan" for communications with the 3G3JV.
Communications Board
Description
Step 00
DSR message
(Write the RUN command and
frequency reference.)
Response
Step 01
DSR message
Inverter status read
Response
(Inverter status)
Chapter 7
3G3JV
Sequence 000