• Microprocessor controlled fast auto TX-enable RS232 <=> RS485 interface converter for 2-wire, half-duplex communications, at distances up to 4000 ft. and data rates up to 115.2Kbps.
GENERAL DESCRIPTION and TYPICAL APPLICATIONS:
The RSFC2DIN is a Microprocessor controlled fast Async bi-directional RS232 <=> RS485 interface converter for 2-wire, half-duplex applications, with an automatic TX enable circuit, that will operate at data rates up to 115.2Kbps. The unit has jumpers for bias, termination, RS232 DTE/DCE selection, communications specification (for character oriented timing) and two setting for full automatic operation (bit oriented timing). The unit has three edge mounted LED indicators, an RS485 screw terminal strip, a DB9M RS232 connector, built-in transient protection, and an onboard switching regulator.
The RSFC2DIN is designed for office and/or industrial applications (non-isolated), and provides precision timing in character oriented timing applications. Can be used for point to point, or multi-drop 2-wire systems.
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RSFC2DIN.pdf | Converter schematic |
Click on the image for a larger view:
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PHYSICAL PROPERTIES and FEATURES:
| RS232: | 3-wire interface to DB9M Connector (TX, RX, Common) |
| RS485: | Screw terminal strip (TX/RX+, TX/RX-, Common). |
| Power: | Screw terminal strip (9-35VDC), switching regulator |
| LEDs | TX-RS485(RED), RX-RS485(GRN), and Power(YEL). |
| Bias: | 910/2.2K Ohm pull-up and pull-down (jumper selectable) |
| Termination: | 120 Ohms or 120 Ohms in series with 0.001uF (jumper selectable) |
| Special: | Character oriented Microprocessor control with fixed data rates or two fully automatic modes of operation. |
| Protection: | P6KE6.8A Transient Voltage Suppressors inside 1N4004 diode bridge circuit, auto-reset communications fuses on RS485 TX/RX data lines. |
SPECIFICATIONS:
| Distance: | RS485 up to 4000 ft. (1250 meters). |
| Operation: | 2-wire, half-duplex RS485. |
| Format: | Fixed or Automatic asynchronous data with many combinations of bits, parity, stop. |
| Speed: | Up to 115.2Kbps (slew limited driver) |
| Temperarure: | 0-65C (32-150F) ambient. |
| Humidity: | 10-90% non-condensing. |
| Voltage: | 9-35VDC |
| Power: | Under 1/2 Watt (typical) + external load. |
| Size: | 3.50" X 2.75" X 0.9" (PC Board), with connectors: 3.50" X 3.00" |
| Mounting: | 4-Holes 3.00" X 2.25" (built-in standoffs for #6 hardware) |
OPTIONS AND ORDERING INFORMATION: (MODEL RSFC2DIN)
| RSFC2DIN: | $89.00 ea. (Circuit board only). |
| Enclosure: | $12.00 ea. (Medium-DIN) |
| Cable: | No cable available for this product (DB9M onboard) |
| Supply: | $7.50 ea. (9VDC @ 200/300 mA wall power supply) |
| *RSFC2DIN with all options: RSFC2DIN-BPS @ $108.50 ea. (Qty. 1-9) |
| Contact
Information: R.E. Smith, 4311 R. E. Smith Dr., West Chester, Ohio 45069 513-874-4796 Phone, 513-874-1236 Fax., rs485.com |
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