ULTRA-485 Series Single Port RS-422/485/530 ISA Adapter Specifications Communications Chip 16550 UART or 16850 UART Number of Ports Single RS-485/422 Max. Data Rate 115kbps - 16550 UART 460.8kbps - 16850 UART Max. Data Distance Up to 5000-feet RS-485 Operation 2 or 4 wire Pinout Configuration EIA 530 DTE pinout on DB25P Description Handshake The Model ULTRA-485 incorporates unique hardware circuitry that enables the RTS, CTS, DCD, DSR, and DTR RS-485 interface to appear to be standard COM: interface, requiring no Address Requirements additional software drivers. Previous RS-485 interfaces required the software to 8 consecutive I/O locations IRQ Selections “turn on” RTS to transmit and then “turn off” RTS at the end of the character. 2-5, 7, 10-12, or 15 (2 is 9 on an AT class This required overhead and special interrupt processing. Modern operating machine) systems such as Windows 95/98/NT/ME/2000 and other multi-user operating Interrupt Sharing Capability systems typically will not allow the user access to the low level registers of the Yes UART chip without writing a specialized driver or require significant overhead to Operating Temperature 0 ° to 50 °C accomplish this simple task. Low level RS-485 driver maintenance is handled by Storage Temperature the hardware on the ULTRA-485 rather than through software, therefore, initial -20 ° to 70 °C development for RS-232 communications can be effortlessly modified to RS-485. Relative Humidity 0 to 90% Non-condensing PINOUT Connections Power Requirements RS-530 Mode +5V @ 160mA Signal Signal Signal Signal Signal Name Name Name Name Name Pin # Pin # Pin # Pin # Pin # Mode Mode Mode Mode Mode MTBF GND Ground 7 >150,000 hours RDB RX+ Receive positive 16 Input RS-422 MTTR <0.25 hours RDA RX- Receive Negative 3 Input RS-422 OS Support CTSB CTS+ Clear to Send Positive 13 Input RS-422 Dos, Windows 95/98/NT/ME/2000 CTSA CTS- Clear to Send Negative 5 Input RS-422 Ordering Guide Ordering Guide Ordering Guide Ordering Guide Ordering Guide DSRB DSR+ Data Set Ready Positive 22 Input RS-422 ULTRA-485 DSRA DSR- Data Set Ready Negative 6 Input RS-422 Board w/16550 UART, CD manual, CD DCDB DCD+ Data Carrier Detect Positive 10 Input RS-422 software DCDA DCD- Data Carrier Detect Negative 8 Input RS-422 ULTRA-485/850 TDB TX+ Transmit Positive 14 Output RS-422 Board w/16850 UART, CD manual, TDA TX- Transmit Negative 2 Output RS-422 CD software RTSB RTS+ Request to Send Positive 19 Output RS-422 Corporate Headquarters RTSA RTS- Request to Send Negative 4 Output RS-422 ICS Advent DTRB DTR+ Data Terminal Ready Positive 23 Output RS-422 6260 Sequence Drive DTRA DTR- Data Terminal Ready Negative 20 Output RS-422 San Diego, CA 92121-4371 RS-485 Mode (4-Wire Mode) Phone: 800 523-2320 Signal Signal Signal Signal Signal Name Name Name Name Name Pin # Pin # Pin # Pin # Pin # Mode Mode Mode Mode Mode Fax: 858 677-0898 GND Ground 7 Email: sales@icsadvent.com TDB TX+ Transmit Positive 24 Output RS-422 support@icsadvent.com TDA TX- Transmit Negative 25 Output RS-422 Website: www.icsadvent.com RDB RX+ Receive Positive 12 Input RS-422 RDA RX- Receive Negative 13 Input RS-422 International Headquarters ICS Advent Europe Features ® Ben Turner Industrial Estate, Unit 9 · Single channel RS-485/422/530 adapter for Windows 95/98/NT/ME/2000, Oving Road, Chichester DOS, QNX and LINUX Communications West Sussex, PO19 4ET, UK · Automatic control of RS-485 driver enable signal Phone: + 44 (0) 1243 523500 Fax: + 44 (0) 1243 532949 · Speeds to 460.8kbps (16850 model) Email: sales@icsadvent.co.uk · Selectable termination, echo mode, 2/4 wire operation support@icsadvent.co.uk Website: www.icsadvent.co.uk · No special drivers required - looks like standard COM port to the system · 16850 UART version Support · Superior pre-sales and post-sales technical support · All products carry a two year warranty www.icsadvent.com 800-523-2320 ©2001 ICS Advent. All rights reserved. All specifications within this document are subject to change without notice. 1930-050301