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.
Features
- 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
For UART and RS-485 specifications please refer to the datasheet
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)
- Custom specific rear I/O module design available
Ordering Options
| Manuf. Part No | | Part Description |
| SU1-0100-TWIST | | 3U/4HP asynchronous serial interface with octal UART, 4x isolated RS-485 on front panel via Micro-D connector 4x rear I/O UART ports (TTL) via P4 |
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