B&B Electronics 485T manual FAX 815

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You can then use the 485T Tester to monitor the data that is being sent or received on your network. If you have a datascope or a computer running a datascope-like program you can connect it to the RS-232 DATA OUT connector on the 485T. A typical program would be BreakOut II which is available from B & B Electronics. The RS-232 DATA OUT connector is wired as a DTE with data output on pin 2. Pin 4 is connected to pin 5 and pin 6 is connected to pins 8 and 20 for handshake loopback. Pin 7 is ground and there is no connection to pin 3.

NOTE: If the data you receive is garbled, you may have the A & B connectors backwards. Try reversing them.

With the 485T connected and the THRESHOLD pot turned to zero (full clockwise), any RS-422/485 data on the network will appear as RS-232 data at pin 2 of the RS-232 DATA OUT jack. If you have a four-wire network you can only view one pair of lines at a time. This means that you can only see data transmitted from that node or data received by that node, not both at the same time. On a two-wire node (RS-485) you can see both received and transmitted data at the same time.

NOTE: Your datascope must be able to receive data at the same baud rate, etc. as the data that is transmitted on the RS- 422/485 network.

Documentation Number 485T1995 Manual

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B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350

PH (815) 433-5100 --

FAX (815) 433-5105

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Contents Internet RS-422/RS-485 Line TesterTable of Contents Introduction Phone 202 457-4900 --- FAX 202 Electronics Industries AssociationFAX 815 4Documentation Number 485T1995 Manual FAX 815 Ground Terminal B TerminalsPositive Threshold Exceeded LED Threshold PotNegative Threshold Exceeded LED Termination Switch RS-422/RS-485 SwitchPower RS-232 Data Out ConnectorRS-422/485 Test 10Documentation Number 485T1995 Manual FAX 815 12Documentation Number 485T1995 Manual

485T specifications

B&B Electronics has been a prominent player in the field of industrial connectivity solutions, and one of their notable products is the 485T. The 485T is a robust serial communication device designed specifically for converting RS-232 signals to RS-485. This device is particularly valuable in environments that necessitate reliable signal transmission over extended distances, which is where traditional RS-232 connections typically fall short.

One of the standout features of the B&B Electronics 485T is its ability to support communication over long distances of up to 4,000 feet. This makes it an ideal solution for applications in industrial settings, where distances between devices often exceed the limitations of standard serial connections. With data rates of up to 115.2 kbps, the 485T ensures that information can be transmitted swiftly and efficiently, making it suitable for various real-time monitoring and control applications.

The 485T incorporates advanced technologies that enhance its performance and reliability. For instance, it features built-in surge protection, which safeguards the device and connected equipment from voltage spikes and transient events. This is crucial in industrial environments where electrical noise and surges can be commonplace. Additionally, the device is designed to support multiple nodes on the RS-485 network, accommodating up to 32 devices simultaneously. This versatility allows for expanded networking capabilities, making it easier to integrate multiple devices and sensors into a cohesive communication system.

In terms of configuration, the B&B Electronics 485T is user-friendly, featuring jumper settings that allow for quick adjustments to accommodate different application requirements. Users can easily switch between half-duplex and full-duplex modes, providing greater flexibility based on the needs of their specific communication networks.

The 485T's compact design makes it easy to integrate into existing systems without taking up excessive space, and its durable construction ensures reliability in demanding environments. Furthermore, with a temperature range designed to withstand industrial conditions, the device can function effectively in both warm and cold settings.

In conclusion, the B&B Electronics 485T is a powerful solution for anyone in need of reliable and long-distance RS-232 to RS-485 conversion. With its high data rates, long-distance capabilities, and enhanced durability, the 485T serves as an excellent choice for industrial communication applications, ensuring that devices remain connected and operational even in the most challenging environments.
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