Hardware Connectivity
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B&B USB TO SERIAL 1 PORT RS-232 WITH DB9M - 1 x Type B USB 2.0 USB Male - 1 x 9-pin DB-9 RS-232 Serial Male - 1
These compact USB to Asynchronous Serial RS-232 and RS-485 mini-converters allow you to add a serial port to your USB only PC. They are perfect connecting to a remote device to gather data or upload a program. USB 2.0 compatibility makes installing them on your PC easy. Versions are available with DB9 connectors and Terminal Blocks for quick wiring. We support RS-232, RS-485 (2-Wire) and RS-485 (4-Wire) protocols. Need 5 Volt and 3.3 Volt TTL? We even have a converter for that. Our driver software supports operating systems up to Windows 7 with 32 and 64 bit support.
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B+B SmartWorx USB to RS-232 Mini-Converter - 1 x Type B USB 2.0 USB Female - 1 x 9-pin DB-9 RS-232 Serial Male
- Connect RS-232 Devices to your USB Port
- Perfect for Field Service Applications
- Small - Fits easily into any laptop bag
- USB Port Powered
- USB 2.0 (12 Mbps) Compatible
- RS-232 Data rates up to 460.8 Kbps
- Supports Windows 98, ME, 2000, XP, Vista, Win7 32 & 64 bit
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Port Powered 9 Pin RS-232/422 Converter - B+B SmartWorx - 1 Pack - 1 x DB-9 Female Serial - 1 x DB-9 Female Serial
These port-powered RS-232 to 422/485 converters change TD and RD RS-232 lines to 422/485 signals. All of our serial port converters feature Automatic Send Data Control. SDC automatically enables the RS-485 driver when data is present on the RS-232 side. Control of the driver is automatic at rates up to 115.2 kbps.
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B&B PORT POW 9PIN 232/422 CON W/TB - 1 x 9-pin DB-9 RS-232 Serial Female - 1 x RS-422 Terminal Block - 1
These port-powered RS-232 to 422/485 converters change TD and RD RS-232 lines to 422/485 signals. All of our serial port converters feature Automatic Send Data Control. SDC automatically enables the RS-485 driver when data is present on the RS-232 side. Control of the driver is automatic at rates up to 115.2 kbps.
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B+B SmartWorx Port-Powered RS-232 to RS-422 Converter - 1 x 25-pin DB-25 RS-232 Serial Female - 1 x 25-pin DB-25 RS-422 Serial Male
This RS-232 to RS-422 converter converts unbalanced RS-232 signals to balanced RS-422 signals. The power used for this converter is derived from the transmit data line (pin 2) and the handshake control lines (pins 4, 5, 6, 8, and 20). The converter can derive power from these lines when they are in the positive or negative voltage state. This permits the converter to be used in applications without any regard to software control of the handshake lines. If no handshake lines are available and all power must be derived from the transmit data line, the converter can drive limited cable lengths. A guide for this condition would be to drive only several hundred feet of transmission line and not to terminate the transmission line with a resistor of less than 1000 ohms. When more handshake lines are available longer lengths of cable can be driven. This converter has been tested at 115.2k baud with 4000 feet of cable. For applications where handshake lines are not available and long cable runs are involved, an external power supply can be connected to the male connector on the RS-422 side of the converter on pins 12 (Gnd) and 25 (+12).
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B+B SmartWorx Port - Powered RS-232 to RS-422 Converter - 1 x RS-232 Serial - 1 x RS-422 Serial - 1
The 422LP9R is a port - powered two - channel RS - 232 to RS - 422 converter. It converts TD and RD RS - 232 lines to balanced RS - 422 signals. The unit is powered from the RS - 232 handshake lines DTR an d RTS. One of these handshake lines must be asserted (high) in order to power the unit (See Table 1). The RS - 422 driver is enabled when RTS is asserted. Therefore, RTS must be asserted in order to transmit data. The RS - 422 receiver is always enabled. If DT R is always asserted and the RTS is used to control the driver, the 422LP9R can be used as a RS - 232 to RS - 485 4 - wire converter. To insure reception, it is recommended that DTR is asserted.
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In order to maximize the amount of power available to the RS - 422 d river, the RS - 232 handshake lines are not looped back (tied together). As a result the following handshake lines will appear as disasserted (low): CTS, DCD, and DSR. Care should be taken to insure that any software being used doesn't require any of these handshake lines be asserted. If existing software requires any of the handshake lines to be asserted, you can loop back the required handshake lines in your cable.$187.90
