CUD-TWIST

CompactPCI® Quad 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 CUD-TWIST is a peripheral slot card for CompactPCI® systems, 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 CUD-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 RJ45 front panel jacks, 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 wired to the CompactPCI® backplane connector J2 for rear I/O usage.

Downloads & Ressources

Documents

Drivers

UART/QNX/Windows®

Ordering Information

CUD-01-TWIST	Serial interface 4 x isolated RS-485 half/full-duplex 4 x RJ45 front panel connectors pinout suitable for CU4 replacement
CUD-02-TWIST	Serial interface 4 x isolated RS-485 half/full-duplex 4 x RJ45 front panel connectors pinout suitable for CU4 replacement additional 4 Ports via J2 CU9 and (CU7 or CU8).

Specifications

CompactPCI®

PICMG® CompactPCI® Classic (CPCI 2.0) standard
Single size Eurocard 3U 4HP 100x160mm²
Suitable for CompactPCI® peripheral slot
CompactPCI® backplane connector J1 for PCI® 32-bit 33/66MHz support
Option CompactPCI® backplane connector J2 for rear I/O (4 x UART TTL level signals)
On-board PCI® to PCI Express® bridge
Option +5V only power supply

UART

RS-485 Transceivers

5kV rms isolation barrier RS-485/RS-422 transceivers (Analog Devices)
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
4 x front panel RJ45 connectors 8-lead, three different pin assignments available for order:
- RJ45 CUD-TWIST native pin order, optimized for full-duplex via Ethernet cross-over patch cables
- RJ45 CU4-SOPRANO legacy pin arrangement for seamless changeover of applications
- RJ45 Half-duplex operation optimized via straight Ethernet patch cable
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
Inquiry option D-Sub 9-pin front panel connectors (4 ports require 8HP F/P)

Environmental & Regulatory

Designed & manufactured in Germany
Certified quality management according to ISO 9001
Long term availability
Rugged solution (coating/sealing available on request)
Custom specific modifications on request
RoHS compliant
Operation temperature -40°C to +85°C (industrial temperature range)
Storage temperature -40°C to +85°C, max. gradient 5°C/min
Humidity 5% … 95% RH non condensing
Altitude -300m … +3000m
Shock 15g 0.33ms, 6g 6ms
Vibration 1g 5-2000Hz
MTBF 34.7 years
EC Regulations EN55022, EN55024, EN60950-1 (UL60950-1/IEC60950-1)

Simplified Block Diagram

lifecycle

Product Lifecycle

Active Product
This product is available for purchase and actively supported.
NRFND
"Not Recommended for New Designs" – we suggest avoiding this product for new projects.
EOL
"End of Life" – this product is discontinued and no longer available.

CUD-TWIST

CompactPCI® Quad Isolated RS-485 Interface

EKF Elektronik GmbH

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