EKF CompactPCI® Serial Products: SU1-TWIST • Quad Port Isolated RS-485 Interface

SU1-TWIST

CompactPCI® Serial • Quad Port Isolated RS-485 Interface

	SU1-TWIST Description Ordered List Product Information Block Diagram, Configuration Block Diagram RS-485 Transceiver Micro-D Application Note RS-485 General Information Concise Guide Smart Solution
	Drivers Windows^® QNX
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SU1-TWIST

CompactPCI® Serial • Quad Port Isolated RS-485 Interface

Proven and reliable, RS-485 (EIA/TIA-485) stays a popular fieldbus communication interface, due to simple installation via low cost twisted pair copper cables, up to 1200m length.

The SU1-TWIST is a peripheral slot card for CompactPCI® Serial systems, based on PCI Express®. The board is equipped with four isolated front panel RS-485 ports. High speed RS-485 balanced line transceivers with internal 5kV isolation barrier provide for optimum noise and EMC immunity.

The SU1-TWIST is equipped with an octal PCI Express® to UART bridge. The 950-style UARTs are compatible with many asynchronous serial applications and protocols. Four isolated EIA/TIA-485 transceivers are wired to Micro-D front panel connectors, individually configurable for full-duplex operation (4+1 wire cable) or half-duplex (2+1 wire cable), either point-to-point or multipoint applications. Another four UART channels are available via the CompactPCI® Serial backplane connector P4 for versatile rear I/O usage.

SU1-TWIST

Block Diagram

Summary of Features

CompactPCI® Serial

PICMG® CompactPCI® Serial standard (CPCI-S.0)
Single size Eurocard 3U 4HP 100x160mm²
Suitable for CompactPCI® Serial peripheral slot (PCI Express® enabled)
CompactPCI® Serial backplane connector P1 for PCI Express®, single lane link
Option CompactPCI® Serial backplane connector P4 for rear I/O

UART

Pericom® PCI Express® Octal UART PI7C9X7958
Eight high performance 950-class UARTs
16C550 software compatible
128-Byte FIFO for each transmitter/receiver
Baud rate up to 15Mbps
XON/XOFF in-band flow control
CTS/RTS or DSR/DTR out-of-band control
Data frame 5, 6, 7, 8 and 9 bits
Clock prescaling 4 to 46
Windows® WHQL device driver support

RS-485 Transceivers

5kV rms isolation barrier RS-485/RS-422 transceivers (Analog Devices ADM2682)
Configurable as half- or full-duplex
±15 kV ESD protection on RS-485 input/output pins
Transceiver data rate 16Mbps max.
Connect up to 256 nodes on one PartyLine bus (driver enable control via dedicated UART mode select outputs)
Open- and short-circuit, fail-safe receiver inputs
High common-mode transient immunity >25 kV/µs
Thermal shutdown protection

Front Panel I/O

4 x Front panel Micro-D 9-pin high density male connectors
RS-485 front ports isolated against each other and board circuitry
On-board DIP-switches for full/half-duplex setting, and line termination on/off
Micro-D cable assemblies available, e.g. Micro-D to classic style D-Sub male or female
Ordering option D-Sub 9-pin front panel connectors (4 ports require 8HP F/P)
Option 2 x D-SUB9 front panel connectors on request (4HP, 2 x micro ribbon flat cable assembly)
Option 3 x D-SUB9 front panel connectors on request (4HP, front handle replaced by screw lock)
Option 4 x D-SUB9 front panel connectors on request (8HP, 4 x micro ribbon flat cable assembly)

Option Rear I/O

Ordering Option CompactPCI® Serial backplane connector P4 for rear I/O
4 x Rear I/O UART ports (TTL Level), wired to P4 for optional usage with RIO module
Each rear I/O UART port suitable for versatile use with an appropriate transceiver on a RIO module, e.g. RS-232 or RS-485, isolated or non-isolated
Standard rear I/O modules available (SUA-RIO for 4 x RS-232 isolated, SUB-RIO for 4 x RS-485 isolated)
Option all 8 ports available for rear I/O (SUC-RIO)
EKF offers custom specific rear I/O module design

Environment, Regulatory