Response message | 3Com VFD-D D specs

Chapter 4 Parameter SettingsDD Series

3.2 Address (Communication Address)

Valid communication addresses are in the range of 0 to 254. A communication address equal to 0, means broadcast to all AC drives (AMD). In this case, the AMD will not reply any message to the master device.

00H: broadcast to all AC drives

01H: AC drive of address 01

0FH: AC drive of address 15

10H: AC drive of address 16

FEH: AC drive of address 254

For example, communication to AMD with address 16 decimal (10H):

ASCII mode: Address=’1’,’0’ => ‘1’=31H, ‘0’=30H

RTU mode: Address=10H

3.3 Function (Function code) and DATA (data characters)

The format of data characters depends on the function code. 03H: read data from register

06H: write single register

Example: reading continuous 2 data from register address 2102H, AMD address is 01H.

ASCII mode:
Command message:	Response message:

STX		‘:’
Address		‘0’
Address		‘1’
		‘1’
Function		‘0’
Function		‘3’
		‘3’
		‘2’
Starting address		‘1’
Starting address		‘0’
		‘0’
		‘2’
Number of data		‘0’
Number of data		‘0’
(count by word)		‘0’
		‘2’
LRC Check		‘D’
LRC Check		‘7’
		‘7’
END		CR
END		LF
		LF
RTU mode:
Command message:
Address		01H
Function		03H
Starting data address		21H
Starting data address		02H
		02H
Number of data		00H
(count by world)		02H
CRC CHK Low		6FH
CRC CHK High		F7H

STX		‘:’
Address		‘0’
Address		‘1’
		‘1’
Function		‘0’
Function		‘3’
		‘3’
Number of data		‘0’
(count by byte)		‘4’
Content of starting		‘1’
Content of starting		‘7’
address 2102H		‘7’
		‘0’
		‘0’
Content of address 2103H		‘0’
Content of address 2103H		‘0’
		‘0’
		‘0’
LRC Check		‘7’
LRC Check		‘1’
		‘1’
END		CR
END		LF
		LF
Response message:
Address		01H
Function		03H
Number of data		04H
(count by byte)		04H
(count by byte)
Content of data		17H
address 2102H		70H
Content of data		00H
address 2103H		00H
CRC CHK Low		FEH
CRC CHK High		5CH

4-69

VFD-D D specifications

The 3Com VFD-D D is an advanced networking solution designed to meet the demands of modern communication and connectivity. As part of 3Com's extensive portfolio of networking products, this device stands out due to its robust features, innovative technologies, and characteristics that cater to various enterprise environments.

One of the main features of the 3Com VFD-D D is its high-speed data processing capability. Operating at speeds that comfortably support high-bandwidth applications, the device is equipped to handle a multitude of simultaneous connections without compromising performance. This makes it an ideal choice for businesses where consistent, fast access to data is critical.

In terms of connectivity options, the VFD-D D supports a variety of protocols, allowing it to seamlessly integrate with existing infrastructure. Whether through Ethernet, Fiber Channel, or wireless technologies, the device offers versatility in connecting diverse network configurations. This adaptability ensures that organizations can optimize their network setups according to their specific requirements.

The 3Com VFD-D D also boasts advanced security features designed to protect sensitive data from potential threats. With built-in encryption protocols and secure access measures, the device safeguards information while offering administrators full control over user permissions. This heightened security is especially important in today's risk-laden digital landscape, providing peace of mind for organizations entrusting their data to the network.

Moreover, the VFD-D D is designed with scalability in mind. Its modular architecture allows businesses to expand their network capabilities as needed, ensuring that the device can grow alongside their evolving requirements. This flexibility helps organizations manage costs effectively while preparing for future technological advancements.

Another characteristic that sets the 3Com VFD-D D apart is its user-friendly management interface. Administration tasks can be performed quickly and intuitively, reducing the burden on IT staff while enabling efficient network monitoring and troubleshooting. With real-time analytics and reporting capabilities, organizations can gain valuable insights into their network's performance.

Overall, the 3Com VFD-D D combines speed, security, and scalability in a single device, making it a powerful addition to any enterprise network. Its advanced features and technologies are tailored to support the dynamic needs of modern businesses, ensuring reliable performance and robust connectivity in an increasingly interconnected world.

3Com VFD-D D manual Response message

Models: VFD-D D

Response message:

STX

END

STX

END

VFD-D D specifications