CompoBus/D Communications Card Operations

Chapter 5

 

 

 

Note Message communications are supported by CV-series and C200HX/HG/HE PCs, but not by C200HS PCs.

HOverview of Explicit Messages

Explicit messages are sent and received as described below. Basically explicit message communica- tions are executed in 1-byte (8-bit) units.

Header

 

Node address

Service code

Class

 

Instance

Attribute

Data

Footer

 

 

 

 

 

 

 

 

 

 

 

 

 

Item

 

 

 

 

 

 

Content

 

 

 

 

 

 

 

 

Header

 

 

The header indicates the beginning of an explicit message and that the frame is an

 

 

 

explicit message request/response. It is set automatically for CompoBus/D

 

 

 

(DeviceNet), so there is no particular need to be concerned with it.

 

 

 

 

 

Node address

Request:

Set the node address of the Slave/Master to be requested.

 

 

 

Response:

The node address of the responding Slave/Master is set.

Service code

Request:

Set the code of the requested service (read/write, etc.).

 

 

 

 

Response:

The MSB (most significant bit) of the requested service code is

 

 

 

changed to “1” and returned.

 

 

 

 

 

 

 

 

 

 

 

Class

 

 

Function classification (major

 

Indicates the classification of a function

 

 

 

classification)

 

 

 

 

defined by DeviceNet. To specify a function,

Instance

 

 

Instance classification (minor

 

specify these three codes.

 

 

 

 

classification)

 

 

 

 

 

 

 

 

Attribute

 

 

Attribute (Set values are assigned

 

 

 

 

 

 

 

 

for each function.)

 

 

 

 

 

Data

 

 

Request: Set the data to be written.

 

 

 

 

 

 

Response: Read-requested data or fault message are attached.

 

 

 

 

 

Footer

 

 

This is the part that indicates the end of the explicit message and executes the

 

 

 

CRC check. It is set automatically for CompoBus/D (DeviceNet), so there is no

 

 

 

particular need to be concerned with it.

 

 

 

5-2-2 Sending and Receiving Messages with C200HX/HG/HE PCs

HUsing IOWR

With C200HX/HG/HE PCs, explicit messages are sent using IOWR. To send an explicit message, it is necessary to place FINS command “2801” in front and to send the command to the Master Unit. The Master Unit that receives the command converts the command data to an explicit message and trans- fers it to the destination node. (When sending an explicit message, it is not possible to directly specify the destination node with IOWR.)

(@)IOWR

C

S

D

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Omron 3G3FV-PDRT1-SIN Sending and Receiving Messages with C200HX/HG/HE PCs, Overview of Explicit Messages, Using Iowr
Page 70 Page 72

3G3FV-PDRT1-SIN specifications

The Omron 3G3FV-PDRT1-SIN is a highly sophisticated variable frequency drive (VFD) designed to enhance energy efficiency and drive performance in various industrial applications. This particular model is part of the Omron 3G3FV series, which is well-regarded for its reliability, versatility, and ease of use.

One of the main features of the 3G3FV-PDRT1-SIN is its ability to control asynchronous motors efficiently. The drive supports a wide range of motor types, making it suitable for diverse applications across different sectors, including manufacturing, HVAC systems, and material handling. The unit is designed to provide precise control over the speed and torque of motors, which is crucial for optimizing machine performance and energy consumption.

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Additionally, the drive features an easy-to-use graphical display, which simplifies the programming and monitoring of drive settings. Users can quickly configure the operating parameters and monitor performance metrics, enhancing operational efficiency. The intuitive interface also allows for quick troubleshooting, reducing downtime and maintenance costs.

The Omron 3G3FV-PDRT1-SIN is built with robustness and durability in mind. It conforms to several international standards, ensuring reliable operation in industrial settings. The drive is designed to withstand harsh environments, including fluctuations in temperature and humidity. This resilience helps to extend the lifespan of both the drive and the connected motor.

Furthermore, the 3G3FV series includes built-in communication capabilities that facilitate integration with other automation equipment. This connectivity supports various industrial protocols, enabling seamless data exchange and real-time monitoring of system performance.

In conclusion, the Omron 3G3FV-PDRT1-SIN is an advanced variable frequency drive that combines energy efficiency, precision control, and robust design. It is an ideal solution for optimizing motor-driven systems across a range of industrial applications, with features that enhance user experience and overall operational effectiveness.
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