NEC 4620, 4020 user manual Connection, English-32

Models: 4020 4620

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Controlling the LCD monitor via RS-232C Remote Control

This LCD monitor can be controlled by connecting a personal computer with a RS-232C terminal.

Functions that can be controlled by a personal computer are:

¥Power ON or OFF

¥Switching between input signals

Connection

LCD Monitor + PC

MultiSync

MultiSync

PC

IN

OUT

RS-232C (IN)

RS-232C (OUT)

RS-232C (IN)

(Out)

 

 

 

 

 

RS-232C Cable

RS-232C Cable

RS-232C (OUT)

MultiSync

NOTE: If your PC (IBM or IBM compatible) is equipped only with a 25-pin serial port connector, a 25-pin serial port adapter is required. Contact your dealer for details.

*In order to function, the RS-232C OUT terminal can only be connected to another monitor of the same model. Do not connect to other types of equipment.

The following control sequence is used for a single LCD4020/LCD4620. To control multiple LCD4020/LCD4620 monitors that are daisy-chained together please use the extended control command. Instructions for the extended control command can be found on the CD included with the display. The file is called ÒExternal_control_LCD4X20.pdfÓ. When using the following control commands, all of the daisy-chained monitors can be controlled at the same time from one monitor. Reply and status commands, however, will only pertain to the primary monitor, not secondary monitors.

1) Interface

PROTOCOL

RS-232C

BAUD RATE

9600 [bps]

DATA LENGTH

8 [bits]

 

 

PARITY BIT

NONE

 

 

STOP BIT

1 [bits]

FLOW CONTROL

NONE

 

 

This LCD monitor uses RXD, TXD and GND lines for RS-232C control.

2)Control command diagram

The command is structured by the address code, function code, data code and end code. The length of the command is different for each function.

 

Address code

Function code

Data code

 

End code

 

HEX

30h 30h

Function

Data

 

0Dh

 

 

 

 

 

 

 

 

ASCII

'0' '0'

Function

Data

 

 

 

 

 

 

 

 

 

 

[Address code]

30h 30h (ASCII code, '0' '0'), fixed.

 

[Function code]

A code of each fixed control move.

 

[Data code]

A code of each fixed control data (number) and not always indicated.

 

[End code]

0Dh (In ASCII code, '

') fixed.

English-32

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NEC 4620, 4020 user manual Connection, English-32

4020, 4620 specifications

The NEC 4620 and NEC 4020 are significant models in the realm of telecommunications, particularly noted for their sophistication and capabilities in network management and communication systems. These systems have been crucial in advancing telecommunications infrastructure for businesses and organizations, delivering efficient solutions to manage calling patterns and other communication functions.

The NEC 4620 is renowned for its robust performance and versatility. Designed for small to medium-sized enterprises, this model integrates voice and data communication seamlessly. One of its main features is the support for both legacy telephone systems and modern VoIP technology, allowing businesses to transition gradually while ensuring no disruption in service. It also supports a wide range of telephony applications, enhancing its functionality and usability across various business environments.

A standout characteristic of the NEC 4620 is its scalability. It can be easily expanded to accommodate the growing needs of an organization, providing investment protection as businesses evolve. The system also boasts advanced call handling features, including call forwarding, voicemail, and conferencing capabilities, ensuring efficient communication within and outside the organization.

On the other hand, the NEC 4020 targets larger enterprises with more demanding communication needs. It offers higher capacity and more extensive integration options. This model is built with advanced technologies that support unified communications, allowing seamless collaboration among team members. One of its key technological advancements is its ability to integrate with various third-party applications, providing organizations with customized solutions that cater to their unique workflow and operational requirements.

Both the NEC 4620 and 4020 embrace the concept of unified communications, ensuring that voice, video, and data are effectively converged. This capability not only enhances productivity but also promotes better customer service through improved response times and communication transparency. Additionally, these systems are equipped with robust security features, ensuring that sensitive communication data remains protected from unauthorized access.

With their state-of-the-art technologies and features, the NEC 4620 and 4020 represent a significant investment in the future of organizational communication. As businesses increasingly rely on advanced telecommunications systems to drive growth and efficiency, these models stand out as premier solutions that empower organizations to navigate the complexities of modern communication effectively.