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DNR-SL-501-804
DNR-SL-501-804
RS-232/485 Serial Communications Interface
 
The DNA-SL-501-804 is a 4-port serial communications layer for RACKtangle® I/O chassis. This layer offers isolated serial interfaces software-configurable as RS-232 or RS-485. DNR-SL-501-804 supports up to 44 Mbit/s transfer speed in RS-485 mode or up to 256Kbit/s in RS-232 mode. DNR-SL-501-804 uses 16550 UART controller on each port (FIFO mode only) and supports half- and full-duplex mode for RS-485.

The DNR-SL-501-804 includes the UEI-RSS Remote Serial Server application, Windows and Linux versions. This server allows a Windows or Linux host PC to configure the DNR-SL-501-804 ports as standard serial ports within the host OS (e.g. as COM1: to COM255: ports in Window or standard POSIX functions in Linux). The UEI-RSS supports up to 255 unique serial ports per Ethernet port on the host.
 
Characteristics:
  • Arbitrary baud rate selection (0.01% accuracy)
  • Fou use in PowerDNR RACKtangle®
  • Max speed of 256 Kb/s for RS-232 and 4 Mb/s for RS-485
  • J1587/J1708 support included
  • Each port is software-configurable as RS-232 or RS-485
  • Completely independent bit rate settings for every port
  • 350 V isolation between ports, ports and circuitry; 15 kV ESD
  • Includes UEI-RSS Remote Serial Server application, Windows and Linux versions
 
Technical Specifications
General Serial Specifications
Number ports 4
Serial Interfaces RS-232, RS-485(RS-422),
per-port software-configurable
Max. speed RS-232 256 Kb/s
RS-485 4 Mb/s 
Baud rate selection Any rate from 300 baud to 2 Mbaud, with 0.01% 
accuracy
Supported Modes half- and -full-duplex
RS-232/485 Transceiver MAX3160E (w/ fail-safe RS-485 RX termination)
UART Controller 16550C emulation (w/ extended parity control)
Protection 350 V channel-to-channel; 15 kV ESD protection
Power Consumption 2-5 W (RS-485 mode with max current drive)
Operating Temperature Tested -40 to +85 °C
Operating Humidity 0 - 95%, non-condensing
UART Controller
Base Clock 66 MHz, 24 MHz, custom
FIFO Size 2048 (input and output)
Error Detection interrupts-based, 4 per port
Dedicated Port Interrupts UART interrupt, Timeout interrupt, TX/RX FIFO interrupt
General
Isolation 350 Vrms port-to-port and port-to-chassis
Power consumption 2.0 W (not including output loads)
Operating Temp. (tested) -40°C to +85°C
Operating Humidity 0 - 95%, non-condensing
Vibration IEC 60068-2-6 5 g, 10-500 Hz, sinusoida
IEC 60068-2-64 5 g (rms), 10-500 Hz, broad-band random
Shock IEC 60068-2-27 50 g, 3 ms half sine, 18 shocks @ 6 orientations
30 g, 11 ms half sine, 18 shocks @ 6 orientations
MTBF 350,000 hours