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B&B Electronics RS-422 manual RS-232 Connections/Operation, RS-232 Operation, RS-232 Pinouts

Models: RS-422

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Chapter 5: RS-232 Connections/Operation

The DB-9 male connector is configured as a standard RS-232 (DTE) serial port. Table 3 shows the signal names and pin numbers.

Table 3: RS-232 Pinouts

Name

Description

Direction

DB9M

 

 

(DTE)

Pin

 

 

 

 

DCD

Data Carrier Detect

Input

1

RD

Receive Data

Input

2

TD

Transmit Data

Output

3

DTR

Data Terminal Ready

Output

4

GND

Signal Ground

------

5

DSR

Data Set Ready

Input

6

RTS

Request to Send

Output

7

CTS

Clear to Send

Input

8

RI

Ring Indicator

Input

9

RS-232 Operation

RS-232 signal lines are referenced to Ground, and each signal can alternate above and below ground by the rated voltage (see Specifications for RS-232 Transmitter/Receiver). Typical input voltage levels range from –11 to –3 Volts or +3 to +11 Volts.

The primary RS-232 signals are Transmit (Tx) and Receive (Rx), so together with Ground, they make a “3-wire” interface.

The RTS and CTS signals are Handshaking lines used to indicate to the other device that data can be sent or received. These lines may be enabled or disabled on a byte-by-byte basis and are used to prevent buffer overrun or the loss of data.

Two secondary Handshaking signals are DTR and DSR. They are usually enabled when the device is powered up and the port is open. They may be used for flow control by some devices instead of RTS and CTS.

DCD is used by a modem to indicate Carrier to the computer so data can be sent/received. RI is output by a modem to indicate that the phone or FAX line has a incoming call, so it can be handled.

Documentation Number 3PCIO1-0903 Manual

Chapter 5

41

B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 B&B Electronics Ltd – Westlink Comm. Pk. – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445

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B&B Electronics RS-422 manual RS-232 Connections/Operation, RS-232 Operation, RS-232 Pinouts, Name Description Direction
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RS-422 specifications

B&B Electronics is renowned for its reliable and efficient solutions for industrial communication, and their Multi-Interface Ethernet Serial Servers stand out as versatile tools for connecting legacy serial devices to modern Ethernet networks. The compatibility with various serial communication protocols, including RS-485, RS-232, and RS-422, makes these servers indispensable in numerous applications that require reliable data transfer.

One of the main features of B&B Electronics Multi-Interface Serial Servers is their ability to support multiple serial communication standards. This flexibility allows businesses to integrate older equipment with newer technologies seamlessly. The servers can act as a bridge, ensuring that data from RS-232 devices can be transmitted over Ethernet networks without modification.

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In terms of connectivity, B&B Electronics Multi-Interface Serial Servers come with numerous options to accommodate different network configurations. They support various IP addressing schemes, allowing for easy integration into existing network infrastructures. Their Ethernet compatibility means they can handle high-volume data traffic, making them ideal for applications that demand high-speed communication.

Another significant feature is their user-friendly configuration options. The servers can be configured via a web interface, providing an intuitive and straightforward approach for users to set up and manage their devices remotely. This feature is especially beneficial for businesses with distributed operations, as it allows for easy monitoring and management from a central location.

The serial servers also incorporate advanced technologies such as TCP/IP and UDP protocols, enhancing data transmission reliability. This ensures that even in instances of network interruptions, data is not lost, thus maintaining the integrity of information being communicated between devices.

In summary, B&B Electronics Multi-Interface Ethernet Serial Servers serve as a crucial link between legacy serial devices and modern Ethernet networks. Their flexibility, robust design, and user-friendly features make them a preferred solution for industries looking to improve their communications infrastructure and streamline their operations. With the integration of cutting-edge technologies, these servers not only meet the current demands but also adapt to future advancements in network communications.