• 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.
• Choose from two types of connectors.
The ASC24 is a 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, and a setting for fast responding RS485 devices. Also, the unit has edge mounted LED indicators for power, TX data, and RX data. Model ASC24W has a spring-loaded Wago terminal strip that will accommodate 20-28AWG wire on the RS485 side of the interface. The Model ASC24R provides an RJ11/12 connector for RS485 connections.
The ASC24 is designed for office and/or indoor applications (non-isolated). Can be used for point to point, or multi-drop 2-wire systems.
| Download: | ||
|
ASC24W/R.pdf | Converter schematic/physical |
Click on the photos for a larger image:
|
|
|---|---|
 |
PHYSICAL PROPERTIES and FEATURES:
| RS232: | 3-wire interface to RJ11/12 Connector (TX, RX, Common). |
| RS485: | Optional 3-position Wago terminal strip or RJ11/12 connector. |
| Power: | 2.1mm center positive "Barrel" connector (9VDC), linear regulator. |
| LEDs | Power(YEL), TX-RS485(RED), and RX-RS485(GRN). |
| Bias: | 620 Ohm pull-up and pull-down (jumper selectable) |
| Termination: | 120 Ohm (jumper selectable). |
| Special: | Jumper selection for fast responding RS485 devices. |
| Protection: | Up to 400W typical per SN75LBC184P specification. |
SPECIFICATIONS:
| Distance: | RS485 up to 4000 ft. (1250 meters) |
| Operation: | 2-wire half-duplex RS485 Data. |
| Format: | Asynchronous data with any combination of bits, parity, stop.(auto mode) |
| Speed: | Up to 115.2Kbps. |
| Temperarure: | 0-65C (32-150F) ambient. |
| Humidity: | 10-90% non-condensing. |
| Voltage: | 8-12VDC. |
| Power: | Under 1/2 Watt(typical) + external load. |
| Size: | 2.50" X 2.00" X 0.9" (PC Board), with connectors: 2.50" X 2.25". |
| Mounting: | 4-Holes at 2.00" X 1.50" (built-in standoffs for #6 hardware). |
OPTIONS AND ORDERING INFORMATION: (Model ASC24W) (Model ASC24R)
| ASC24W: | $43.00ea. (Circuit board only, with Wago terminals) |
| ASC24R: | $43.00ea. (Circuit board only, with RJ11/12 connector) |
| Enclosure: | $8.00 ea. (Small) |
| Cable: | $7.50 ea. (RS232, 7 ft., specify DB9F-7 or DB25F-7) |
| Supply: | $7.50 ea. (9VDC @ 200/300 mA wall power supply) |
| *ASC24W with all options (DB9F cable): ASC24W-B9FPS @ $66.00 ea. (Qty. 1-9) |
| *ASC24R with all options (DB9F cable): ASC24R-B9FPS @ $66.00 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 |
|
|
