Omron SYSDRIVE 3G3RV Series User Manual

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nConfiguration of the Protocol Macro Function
The protocol consists of one or more sequences. A sequence is an independent set of actions to perform
together with a general-purpose peripheral device, such as an Inverter. For example, the RUN command and
the frequency reference are given to the Inverter and the status of the Inverter is read in a single sequence.
A sequence consists of one or more steps. A step consists of a Send & Recv command + a Send & Recv mes-
sage + a step branch in accordance with the processing result + Completion.
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. On
page 101 under Creating a Project File, an example is shown with all actions registered as a single sequence.
A sequence may include the following parameters.
Fig 6.64
Parameter Description
Transmission control
Set the method of control, such as flow control.
Select only modem control for communications with the 3G3RV.
Link word
Set the area for sharing the data between the Programmable Controller and Communications
Board.
On page 101 under 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.
Set a period of approximately 0.5 s each for communictions with the 3G3RV.
Response notify method
A method to write reception data to the I/O memory of the Programmable Controller.
Select “notify by scan” for communictions with the 3G3RV.
PMCR instruction
SYSDRIVE 3G3RVCPU Unit
DSR message
(Write the RUN command
and frequency response.)
Response
Step 00
DSR message
(Read the inverter status)
Response
(Inverter status)
Step 01
Sequence 000
Serial Communications Board

Omron SYSDRIVE 3G3RV Series Specifications

General

Brand	Omron
Model	SYSDRIVE 3G3RV Series
Category	Inverter
Language	English